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Symptoms and Signs – Differential Diagnosis of Nonproductive Cough
An unproductive cough is a loud and vigorous expulsion of air from the lungs that is devoid of moisture, does not stimulate the production of mucus, and may produce a little quantity of sputum. Among individuals with respiratory problems, it is one of the most often reported concerns.
The act of coughing serves as a defensive strategy to empty the airway spaces. Nevertheless, a nonproductive cough is ineffectual and can result in harm, such as the collapse of the airway or the rupture of alveoli or protuberances. An initially nonproductive cough that subsequently turns productive is a characteristic indication of a developing respiratory illness, such as pneumonia.
The cough reflex often arises from the activation of cough receptors by mechanical, chemical, thermal, inflammatory, or psychogenic stimuli. Refer to Nevertheless, external pressure, such as, Viral inflammation of the subdiaphragm or a mediastinal tumor can also trigger it, along with voluntary exhalation of air, which sometimes happens as a neurological habit. Nonproductive cough may also be caused by specific medications, such as angiotensin-converting enzyme inhibitors.
A nonproductive cough might manifest as paroxysms and may then exacerbate by increasing in frequency. A quick onset acute cough may go away on its own; a cough lasting more than one month is classified as chronic and often arises from cigarette smoking.
An individual with a persistent nonproductive cough may minimize or disregard it, instead accepting it as a typical symptom. Indeed, he typically will not seek medical intervention unless he presents with additional symptoms. Cystoid cough may occur when a foreign object enters the external auditory canal of a youngster. Thoroughly inspect the child's ears.
Ask the patient about recent illness (especially a cardiovascular or pulmonary disorder), surgery, or trauma. Also, ask about hypersensitivity to drugs, foods, pets, dust, or pollen. Find out which medications the patient takes, if any, and ask about recent changes in schedule or dosages. Also, ask about recent changes in his appetite, weight, exercise tolerance, or energy level and recent exposure to irritating fumes, chemicals, or smoke.
As you’re taking his history, observe the patient’s general appearance and manner: Is he agitated, restless, or lethargic; pale, diaphoretic, or flushed; anxious, confused, or nervous? Also, note whether he’s cyanotic or has clubbed fingers or peripheral edema.
Given the apprehension of being identified as someone afflicted with tuberculosis (TB), the patient may hesitate to provide details on his indications and manifestations, such as a cough. Request information from the patient who is at risk for tuberculosis (TB) - whether they were born in a different country, had contact with acute TB, or engaged in high-risk activities - on possible exposure to TB.
Proceed to do a physical examination. Begin by assessing the patient's vital signs. Assess the depth and cadence of his respirations, and make a record of any wheezing or "crowing" sounds. Feel the patient's dermal surface: Is it rather cold?
Is it warm, clammy, or dry? Assess his nasal and oral cavities for congestion, irritation, discharge, or indications of infection. Examine his neck for dilated jugular veins and deviation of the trachea, and examine for any firm lumps or swollen lymph nodes by palpation.
Inspect his chest, carefully analyzing its structure and searching for any atypical movement of the chest wall. Do any retractions or use of auxiliary muscles come to your attention? Detect dullness, tympany, or flatness via percussion. Conduct auscultation to detect wheezing, crackles, rhonchi, pleural friction rubs, and reduced or missing breath sounds. Lastly, visually inspect his belly for any signs of distension, pain, lumps, or abnormal bowel noises.
A Critical Analysis of the Cough Mechanism The anatomical distribution of cough receptors is believed to include the nose, sinuses, auditory canals, nasopharynx, larynx, trachea, bronchi, pleurae, diaphragm, and potentially the pericardium and gastrointestinal system. Upon stimulation of a cough receptor, the vagus and glossopharyngeal nerves convey the impulse to the "cough center" located in the medulla. Subsequently, the impulse is conveyed to the larynx as well as to the intercostal and abdominal muscles. Profound inspiration is
then the glottis closes, the diaphragm relaxes, and the abdominal and intercostal muscles contract. The subsequent elevation in lung pressure causes the glottis to open, allowing for the expulsion of a powerful and loud exhalation referred to as a cough.
Medical Causes
Airway occlusion
Upper airway partial blockage results in an abrupt onset of dry, paroxysmal coughing. The patient is experiencing dyspnea, wheezing, and hoarseness, accompanied by stridor, rapid heart rate, and reduced breath sounds.
Anthrax (inhalation)
The acute infectious disease known as anthrax is attributed to the gram-positive, spore-forming bacterium Bacillus anthracis. While the disease mostly affects wild and domestic grazing animals, such as cattle, sheep, and goats, the spores can persist in the soil for an extended period through many years. The disease can manifest in humans who are exposed to infectious animals, diseased animal tissue, or as a result of biological warfare. Primarily, natural cases manifest in agricultural areas across the globe. The anthrax might manifest as cutaneous, inhalational, or gastrointestinal type.
Inhalation anthrax is contracted by the inhalation of aerosolized spores. Initial manifestations resemble those of influenza and encompass a fever, chills, weakness, a cough, and chest discomfort. The illness typically manifests in two phases, during which there is a phase of recuperation following the first indications and symptoms. The second stage progresses suddenly with swift decline characterized by a fever, difficulty breathing, shortness of breath, and decrease in blood pressure, often resulting in death within 24 hours. The radiological examination reveals mediastinitis and symmetric mediastinal widening.
Thoracic aortic aneurysm
An aortic aneurysm exerting pressure on the trachea can result in a dry cough accompanied by difficulty breathing, hoarseness, wheezing, and a pain in the shoulders, lower back, or belly below the sternum. Furthermore, the patient may have facial or neck edema, distention of the jugular vein, difficulty swallowing, conspicuous veins throughout the chest, stridor, and potentially, paresthesia or neuralgia.
Asthma
Attacks of asthma usually manifest during the nighttime, beginning with a cough that is not productive and accompanied by little wheezing. This gradually advances to intense difficulty breathing, audible wheezing, chest constriction, and a cough that generates viscous mucus.
Additional indicators include anxiety, rhonchi, extended exhalations, intercostal and supraclavicular retractions during inhalation, auxiliary muscular activity, flared nostrils, rapid breathing, increased heart rate, excessive sweating, and flushing or cyanosis.
Atelectasis
The deflation of lung tissue has the effect of activating cough receptors, therefore inducing a nonproductive cough. Furthermore, the patient may experience pleuritic chest pain, anxiety, dyspnea, tachypnea, and increase in heart rate. The patient may have cyanotic and diaphoretic skin, reduced breath sounds, a dull chest upon percussion, inspiratory delay, substernal or intercostal retractions, reduced vocal fremitus, and distortion of the trachea towards the affected side.
Avian flu
The avian flu, or bird flu (H5N1), is a virus exclusively present in ill birds and poultry, and typically does not cause infection in humans. Indeed, the initial documented instances of human infection with H5N1 (the most highly pathogenic variant) took place globally in 1996. A nonproductive cough is a defining feature of an infection caused by the avian flu virus, similar to its manifestation with typical human influenza viruses. Presenting symptoms include fever, sore throat, rhinorrhea, headache, myalgia, and conjunctivitis; viral pneumonia and acute respiratory distress are severe and potentially fatal consequences that may arise.
Blast lung injury
Those afflicted with a blast lung injury may have an abrupt emergence of a severe, unproductive cough. Blast lung injury refers to the deliberate release and direction of an explosive device against a victim, usually occurring in times of war or, more recently, in worldwide terrorism incidents. The involvement of metalic fragments or aerosol chemical irritants in an explosive device depends on its composition. The patient may present with chest pain, a sensation of burning in the chest or throat, respiration and speech difficulties, shortness of breath, headache, and fainting. Further observations encompass cutaneous tears and contusions, edema, pulmonary bleeding, tachypnea, hypoxia, wheezing, apnea, cyanosis, reduced breath sounds, and hemodynamic instability. Diagnostic procedures for this condition include a chest X-ray which shows a distinctive "butterfly" pattern.
Chronic bronchitis.
Bronchitis first presents with a nonproductive, hacking cough that will eventually progress to a productive cough. Additional symptoms observed include extended expiration, wheezing, difficulty breathing, use of auxiliary muscles, barrel chest, cyanosis, rapid breathing, crackles, and sporadic rhonchi. Clubbing may manifest throughout advanced-stages.
Bronchogenic carcinoma
Initial symptoms of bronchogenic carcinoma may include a persistent, unproductive cough, difficulty breathing, and indistinct angina. Furthermore, the patient may have wheezing.
Common cold
The typical course of the common cold begins with a nonproductive, hacking cough and advances to a combination of symptoms including sneezing, headaches, malaise, fatigue, rhinorrhea, myalgia, arthralgia, nasal congestion, and a rough throat.
Esophageal achalasia
An esophageal achalasia is characterised by a dry cough upon regurgitation and aspiration. Moreover, the patient may experience recurring pulmonary infections and dysphagia.
Esophageal diverticula
The patient suffering from esophageal diverticula presents with a nighttime cough that is not productive, regurgitation and aspiration, dyspepsia, and dysphagia. His cervical region may exhibit edema and produce a gurgling sound. The patient may also present with halitosis and weight loss.
Esophageal occlusion
Indications of esophageal occlusion include acute nonproductive coughing and gagging, accompanied by a feeling of obstruction in the throat. Additional symptoms include dysphagia, neck or chest pain, and the inability to swallow.
Chronic gastroesophageal reflux disease (GER)
A nonproductive cough linked to gastroesophageal reflux disease can be attributed to inflammation of the larynx. Peptic reflux is the retrograde movement of food or liquid from the stomach to the esophagus and subsequent leakage into the hypopharynx. Additional symptoms encompass chest pain characterized by a burning sensation (heartburn), throat soreness, hoarseness, belching, dysphagia, and occasionally wheezing.
Hantavirus pulmonary syndrome.
Patients diagnosed with Hantavirus pulmonary syndrome often experience a nonproductive cough, characterized by noncardiogenic pulmonary edema. Additional symptoms include headache, muscle soreness, elevated body temperature, nausea, and vomiting.
Hypersensitivity pneumonitis.
In hypersensitivity pneumonitis, an acute nonproductive cough, fever, shortness of breath, and general malaise typically manifest 5 to 6 hours following exposure to an antigen.
Interstitial lung disease
An interstitial lung disease patient presents with a nonproductive cough and a gradual increase in difficulty breathing. Besides, he may exhibit cyanosis, clubbing, fine crackles, weariness, fluctuating chest discomfort, and weight loss.
Laryngeal tumor
In addition to slight throat discomfort and hoarseness, a mild, nonproductive cough is an early indication of a laryngeal pathology. In due course, dysphagia, dyspnea, cervical lymphadenopathy, stridor, and an earache may manifest.
Laryngitis
The acute manifestation of laryngitis is characterized by a nonproductive cough accompanied by localised pain, particularly on swallowing or speaking, together with fever and malaise. The severity of his hoarseness can vary from slight to total.
loss of voice.
Pulmonary abscess. An initial symptom of lung abscess is often a nonproductive cough, accompanied by weakness, difficulty breathing, and pleuritic chest pain. Furthermore, the patient may present with diaphoresis, pyrexia, cephalalgia, lethargy, exhaustion, crackles, reduced respiratory sounds, anorexia, and weight loss. Later on, his cough generates copious quantities of purulent, malodorous, and potentially hematochezic sputum.
Pleural effusion
Characteristic of pleural effusion are a nonproductive cough, dyspnea, pleuritic chest pain, and reduced chest mobility. Additional observations include a pleural friction rub, increased heart rate, rapid breathing, excessive vocalization, lack of distinct noises when tapped, reduced or missing breath sounds, and reduced tactile sensitivity.
Pneumonia
The onset of bacterial pneumonia often involves an initially nonproductive, hacking, and unpleasant cough that quickly progresses to become productive. Additional symptoms noted include tremors, cephalalgia, pyrexia, dyspnea, chest pain in the pleuritic region, rapid breathing, increased heart rate, labored breathing, nasal flaring, reduced breath sounds, little crackles, rhonchi, and discoloration of the skin. On percussion, the patient's chest may exhibit dullness.
In mycoplasma pneumonia, a nonproductive cough typically develops 2 to 3 days after the initial symptoms of malaise, including a headache and a sore throat. This cough may be paroxysmal, resulting in substernal chest discomfort. Frequently, fever manifests, although, the patient does not exhibit signs of severe illness.
Viral pneumonia is characterized by a nonproductive, hacking cough and the progressive development of lethargy, headache, anorexia, and a low-grade fever.
Pneumothorax
A life-threatening condition, pneumothorax is characterized by a dry cough and symptoms of respiratory distress, including intense shortness of breath, rapid heart rate, rapid breathing, and redness of the skin. The patient presents with abrupt, acute chest pain that exacerbates with chest expansion, along with subcutaneous crepitation, hyperresonance or tympany, reduced vocal fremitus, and diminished or missing breath sounds on the afflicted side.
Pulmonary edema. Pulmonary edema first presents with a dry cough that advances to a frothy or blood-tinged sputum, difficulty breathing during physical activity, repeated episodes of shortness of breath during the night, difficulty breathing, increased heart rate, rapid breathing, crackles in the chest, and a sensation of pressure in the ventricles. Severe pulmonary edema is characterised by increased respiratory rate and effort, coupled with coarse diffuse crackles and coughing that generates frothy, bloody sputum.
Pulmonary embolism
An acute pulmonary embolism can rapidly cause a dry cough accompanied by shortness of breath and chest discomfort that is either pleuritic or anginal. However, the cough usually generates phlegm with a blood-tinged appearance. In addition to tachycardia and a low-grade fever, less frequent indications and symptoms include excessive coughing up of blood, splinting of the chest, swelling of the legs, and, in cases of a significant embolism, cyanosis, fainting, and distension of the jugular vein. In addition, the patient may exhibit a pleural friction rub, widespread wheezing, dullness upon percussion, and reduced breath sounds.
Sarcoidosis
Sarcoidosis is characterised by a nonproductive cough, with accompanying symptoms of dyspnea, substernal discomfort, and malaise. Furthermore, the patient may experience fatigue, arthralgia, myalgia, weight loss, tachypnea, crackles, lymphadenopathy, hepatosplenomegaly, skin lesions, vision impairment, dysphagia, and arrhythmias.
Severe acute respiratory syndrome (SARS)
The cause of SARS, an acute viral disease, is currently unknown; nonetheless, a new Coronavirus has been suggested as a potential explanation. While the majority of cases have been documented in Asia, namely in China, Vietnam, Singapore, and Thailand, others have emerged in Europe and North America. The incubation period ranges from 2 to 7 days, beginning with a temperature often exceeding 100.4°F [38°C]. Additional symptoms seen are headache, lethargy, dry, nonproductive cough, and dyspnea. The disease exhibits significant variability in its severity, encompassing mild sickness, pneumonia, and, in certain instances, advancing to respiratory failure and mortality.
Tracheobronchitis (acute)
Initially, tracheobronchitis causes a nonproductive cough that subsequently becomes productive as the amount of secretions increases. Common symptoms that often occur before the cough begins include chills, a sore throat, a mild fever, muscle and back pain, and substernal tightness. Commonly heard are rhonchi and wheezes. Severe sickness results in a raised body temperature ranging from 101°F to 102°F (38.3°C to 38.9°C) and maybe bronchospasm, characterized by intense wheezing and heightened coughing.
Tularemia
Tularemia, typically referred to as rabbit fever, is the result of infection by the gram-negative, non-spore-forming bacterium Francisella tularensis. Usually a rural ailment, it is prevalent in wild animals, water, and damp soil. Transmission of the disease to humans occurs via the bite of a diseased bug or tick, direct contact with infected animal corpses, consumption of contaminated water, or inhalation of the germs. It is identified as a potential airborne agent for use in biological warfare. Following inhalation of the organism, signs and symptoms include sudden onset of fever, chills, headache, widespread muscle soreness, nonproductive cough, shortness of breath, chest discomfort with pleuria, and swelling of the chest.
Additional contributing factors
Medical diagnostic testing. Clinical evaluations of pulmonary function (PFTs) and bronchoscopy may activatemay activate cough receptors and elicit coughing.
Therapies. Pruritus of the carina during suctioning or the insertion of deep endotracheal or tracheal tubes might induce a paroxysmal or hacking cough. Coughing that is not productive can also be caused by intermittent positive-pressure breathing or spirometry. Several inhalants, including pentamidine, can induce coughing.
Guidelines for Pediatric Populations
Evaluation of a nonproductive cough in newborns and young children can be challenging due to its inability to be deliberately caused and the need for careful observation.
Aspiration of a foreign body, particularly in children aged 6 months to 4 years, may be indicated by a quick beginning of paroxysmal nonproductive coughing. Nonproductive coughing can also arise from many syndromes that impact neonates and young children. Within the context of asthma, a distinctive nonproductive "tight" cough might manifest abruptly or gradually at the onset of an attack. In most cases, the cough becomes productive towards the latter stages of the disease. In cases of bacterial pneumonia, a nonproductive, hacking cough develops (
Rapidly and effectively gets productive throughout a span of 2 to 3 days. The onset of acute bronchiolitis is most common at the age of 6, characterized by intermittent bouts of nonproductive coughing that increase in frequency as the condition advances. Acute otitis media, a prevalent condition in newborns and young children because to their constricted eustachian tubes, also results in unproductive coughing.
Generally, a kid afflicted with measles experiences a mild, unproductive, hacking cough that worsens with time. Cystic fibrosis may initially manifest as a nonproductive, paroxysmal cough caused by retained secretions. Life-threatening pertussis causes a cough that transitions to paroxysmal, characterized by an inspiratory "whoop" or crowing sound upon inspiration. Allergic airway hyperactivity leads to a persistent nonproductive cough that worsens with physical activity or contact with cold air. Psychogenic coughing can manifest in children experiencing stress, strong emotional stimulation, or a desire for attention.
Guidelines for Geriatrics
Elderly people should always be questioned about nonproductive coughing since it could suggest a severe acute or chronic disease.
An unproductive cough is a loud and vigorous expulsion of air from the lungs that is devoid of moisture, does not stimulate the production of mucus, and may produce a little quantity of sputum. Among individuals with respiratory problems, it is one of the most often reported concerns.
The act of coughing serves as a defensive strategy to empty the airway spaces. Nevertheless, a nonproductive cough is ineffectual and can result in harm, such as the collapse of the airway or the rupture of alveoli or protuberances. An initially nonproductive cough that subsequently turns productive is a characteristic indication of a developing respiratory illness, such as pneumonia.
The cough reflex often arises from the activation of cough receptors by mechanical, chemical, thermal, inflammatory, or psychogenic stimuli. Refer to Nevertheless, external pressure, such as, Viral inflammation of the subdiaphragm or a mediastinal tumor can also trigger it, along with voluntary exhalation of air, which sometimes happens as a neurological habit. Nonproductive cough may also be caused by specific medications, such as angiotensin-converting enzyme inhibitors.
A nonproductive cough might manifest as paroxysms and may then exacerbate by increasing in frequency. A quick onset acute cough may go away on its own; a cough lasting more than one month is classified as chronic and often arises from cigarette smoking.
An individual with a persistent nonproductive cough may minimize or disregard it, instead accepting it as a typical symptom. Indeed, he typically will not seek medical intervention unless he presents with additional symptoms. Cystoid cough may occur when a foreign object enters the external auditory canal of a youngster. Thoroughly inspect the child's ears.
Ask the patient about recent illness (especially a cardiovascular or pulmonary disorder), surgery, or trauma. Also, ask about hypersensitivity to drugs, foods, pets, dust, or pollen. Find out which medications the patient takes, if any, and ask about recent changes in schedule or dosages. Also, ask about recent changes in his appetite, weight, exercise tolerance, or energy level and recent exposure to irritating fumes, chemicals, or smoke.
As you’re taking his history, observe the patient’s general appearance and manner: Is he agitated, restless, or lethargic; pale, diaphoretic, or flushed; anxious, confused, or nervous? Also, note whether he’s cyanotic or has clubbed fingers or peripheral edema.
Given the apprehension of being identified as someone afflicted with tuberculosis (TB), the patient may hesitate to provide details on his indications and manifestations, such as a cough. Request information from the patient who is at risk for tuberculosis (TB) - whether they were born in a different country, had contact with acute TB, or engaged in high-risk activities - on possible exposure to TB.
Proceed to do a physical examination. Begin by assessing the patient's vital signs. Assess the depth and cadence of his respirations, and make a record of any wheezing or "crowing" sounds. Feel the patient's dermal surface: Is it rather cold?
Is it warm, clammy, or dry? Assess his nasal and oral cavities for congestion, irritation, discharge, or indications of infection. Examine his neck for dilated jugular veins and deviation of the trachea, and examine for any firm lumps or swollen lymph nodes by palpation.
Inspect his chest, carefully analyzing its structure and searching for any atypical movement of the chest wall. Do any retractions or use of auxiliary muscles come to your attention? Detect dullness, tympany, or flatness via percussion. Conduct auscultation to detect wheezing, crackles, rhonchi, pleural friction rubs, and reduced or missing breath sounds. Lastly, visually inspect his belly for any signs of distension, pain, lumps, or abnormal bowel noises.
A Critical Analysis of the Cough Mechanism The anatomical distribution of cough receptors is believed to include the nose, sinuses, auditory canals, nasopharynx, larynx, trachea, bronchi, pleurae, diaphragm, and potentially the pericardium and gastrointestinal system. Upon stimulation of a cough receptor, the vagus and glossopharyngeal nerves convey the impulse to the "cough center" located in the medulla. Subsequently, the impulse is conveyed to the larynx as well as to the intercostal and abdominal muscles. Profound inspiration is
then the glottis closes, the diaphragm relaxes, and the abdominal and intercostal muscles contract. The subsequent elevation in lung pressure causes the glottis to open, allowing for the expulsion of a powerful and loud exhalation referred to as a cough.
Medical Causes
Airway occlusion
Upper airway partial blockage results in an abrupt onset of dry, paroxysmal coughing. The patient is experiencing dyspnea, wheezing, and hoarseness, accompanied by stridor, rapid heart rate, and reduced breath sounds.
Anthrax (inhalation)
The acute infectious disease known as anthrax is attributed to the gram-positive, spore-forming bacterium Bacillus anthracis. While the disease mostly affects wild and domestic grazing animals, such as cattle, sheep, and goats, the spores can persist in the soil for an extended period through many years. The disease can manifest in humans who are exposed to infectious animals, diseased animal tissue, or as a result of biological warfare. Primarily, natural cases manifest in agricultural areas across the globe. The anthrax might manifest as cutaneous, inhalational, or gastrointestinal type.
Inhalation anthrax is contracted by the inhalation of aerosolized spores. Initial manifestations resemble those of influenza and encompass a fever, chills, weakness, a cough, and chest discomfort. The illness typically manifests in two phases, during which there is a phase of recuperation following the first indications and symptoms. The second stage progresses suddenly with swift decline characterized by a fever, difficulty breathing, shortness of breath, and decrease in blood pressure, often resulting in death within 24 hours. The radiological examination reveals mediastinitis and symmetric mediastinal widening.
Thoracic aortic aneurysm
An aortic aneurysm exerting pressure on the trachea can result in a dry cough accompanied by difficulty breathing, hoarseness, wheezing, and a pain in the shoulders, lower back, or belly below the sternum. Furthermore, the patient may have facial or neck edema, distention of the jugular vein, difficulty swallowing, conspicuous veins throughout the chest, stridor, and potentially, paresthesia or neuralgia.
Asthma
Attacks of asthma usually manifest during the nighttime, beginning with a cough that is not productive and accompanied by little wheezing. This gradually advances to intense difficulty breathing, audible wheezing, chest constriction, and a cough that generates viscous mucus.
Additional indicators include anxiety, rhonchi, extended exhalations, intercostal and supraclavicular retractions during inhalation, auxiliary muscular activity, flared nostrils, rapid breathing, increased heart rate, excessive sweating, and flushing or cyanosis.
Atelectasis
The deflation of lung tissue has the effect of activating cough receptors, therefore inducing a nonproductive cough. Furthermore, the patient may experience pleuritic chest pain, anxiety, dyspnea, tachypnea, and increase in heart rate. The patient may have cyanotic and diaphoretic skin, reduced breath sounds, a dull chest upon percussion, inspiratory delay, substernal or intercostal retractions, reduced vocal fremitus, and distortion of the trachea towards the affected side.
Avian flu
The avian flu, or bird flu (H5N1), is a virus exclusively present in ill birds and poultry, and typically does not cause infection in humans. Indeed, the initial documented instances of human infection with H5N1 (the most highly pathogenic variant) took place globally in 1996. A nonproductive cough is a defining feature of an infection caused by the avian flu virus, similar to its manifestation with typical human influenza viruses. Presenting symptoms include fever, sore throat, rhinorrhea, headache, myalgia, and conjunctivitis; viral pneumonia and acute respiratory distress are severe and potentially fatal consequences that may arise.
Blast lung injury
Those afflicted with a blast lung injury may have an abrupt emergence of a severe, unproductive cough. Blast lung injury refers to the deliberate release and direction of an explosive device against a victim, usually occurring in times of war or, more recently, in worldwide terrorism incidents. The involvement of metalic fragments or aerosol chemical irritants in an explosive device depends on its composition. The patient may present with chest pain, a sensation of burning in the chest or throat, respiration and speech difficulties, shortness of breath, headache, and fainting. Further observations encompass cutaneous tears and contusions, edema, pulmonary bleeding, tachypnea, hypoxia, wheezing, apnea, cyanosis, reduced breath sounds, and hemodynamic instability. Diagnostic procedures for this condition include a chest X-ray which shows a distinctive "butterfly" pattern.
Chronic bronchitis.
Bronchitis first presents with a nonproductive, hacking cough that will eventually progress to a productive cough. Additional symptoms observed include extended expiration, wheezing, difficulty breathing, use of auxiliary muscles, barrel chest, cyanosis, rapid breathing, crackles, and sporadic rhonchi. Clubbing may manifest throughout advanced-stages.
Bronchogenic carcinoma
Initial symptoms of bronchogenic carcinoma may include a persistent, unproductive cough, difficulty breathing, and indistinct angina. Furthermore, the patient may have wheezing.
Common cold
The typical course of the common cold begins with a nonproductive, hacking cough and advances to a combination of symptoms including sneezing, headaches, malaise, fatigue, rhinorrhea, myalgia, arthralgia, nasal congestion, and a rough throat.
Esophageal achalasia
An esophageal achalasia is characterised by a dry cough upon regurgitation and aspiration. Moreover, the patient may experience recurring pulmonary infections and dysphagia.
Esophageal diverticula
The patient suffering from esophageal diverticula presents with a nighttime cough that is not productive, regurgitation and aspiration, dyspepsia, and dysphagia. His cervical region may exhibit edema and produce a gurgling sound. The patient may also present with halitosis and weight loss.
Esophageal occlusion
Indications of esophageal occlusion include acute nonproductive coughing and gagging, accompanied by a feeling of obstruction in the throat. Additional symptoms include dysphagia, neck or chest pain, and the inability to swallow.
Chronic gastroesophageal reflux disease (GER)
A nonproductive cough linked to gastroesophageal reflux disease can be attributed to inflammation of the larynx. Peptic reflux is the retrograde movement of food or liquid from the stomach to the esophagus and subsequent leakage into the hypopharynx. Additional symptoms encompass chest pain characterized by a burning sensation (heartburn), throat soreness, hoarseness, belching, dysphagia, and occasionally wheezing.
Hantavirus pulmonary syndrome.
Patients diagnosed with Hantavirus pulmonary syndrome often experience a nonproductive cough, characterized by noncardiogenic pulmonary edema. Additional symptoms include headache, muscle soreness, elevated body temperature, nausea, and vomiting.
Hypersensitivity pneumonitis.
In hypersensitivity pneumonitis, an acute nonproductive cough, fever, shortness of breath, and general malaise typically manifest 5 to 6 hours following exposure to an antigen.
Interstitial lung disease
An interstitial lung disease patient presents with a nonproductive cough and a gradual increase in difficulty breathing. Besides, he may exhibit cyanosis, clubbing, fine crackles, weariness, fluctuating chest discomfort, and weight loss.
Laryngeal tumor
In addition to slight throat discomfort and hoarseness, a mild, nonproductive cough is an early indication of a laryngeal pathology. In due course, dysphagia, dyspnea, cervical lymphadenopathy, stridor, and an earache may manifest.
Laryngitis
The acute manifestation of laryngitis is characterized by a nonproductive cough accompanied by localised pain, particularly on swallowing or speaking, together with fever and malaise. The severity of his hoarseness can vary from slight to total.
loss of voice.
Pulmonary abscess. An initial symptom of lung abscess is often a nonproductive cough, accompanied by weakness, difficulty breathing, and pleuritic chest pain. Furthermore, the patient may present with diaphoresis, pyrexia, cephalalgia, lethargy, exhaustion, crackles, reduced respiratory sounds, anorexia, and weight loss. Later on, his cough generates copious quantities of purulent, malodorous, and potentially hematochezic sputum.
Pleural effusion
Characteristic of pleural effusion are a nonproductive cough, dyspnea, pleuritic chest pain, and reduced chest mobility. Additional observations include a pleural friction rub, increased heart rate, rapid breathing, excessive vocalization, lack of distinct noises when tapped, reduced or missing breath sounds, and reduced tactile sensitivity.
Pneumonia
The onset of bacterial pneumonia often involves an initially nonproductive, hacking, and unpleasant cough that quickly progresses to become productive. Additional symptoms noted include tremors, cephalalgia, pyrexia, dyspnea, chest pain in the pleuritic region, rapid breathing, increased heart rate, labored breathing, nasal flaring, reduced breath sounds, little crackles, rhonchi, and discoloration of the skin. On percussion, the patient's chest may exhibit dullness.
In mycoplasma pneumonia, a nonproductive cough typically develops 2 to 3 days after the initial symptoms of malaise, including a headache and a sore throat. This cough may be paroxysmal, resulting in substernal chest discomfort. Frequently, fever manifests, although, the patient does not exhibit signs of severe illness.
Viral pneumonia is characterized by a nonproductive, hacking cough and the progressive development of lethargy, headache, anorexia, and a low-grade fever.
Pneumothorax
A life-threatening condition, pneumothorax is characterized by a dry cough and symptoms of respiratory distress, including intense shortness of breath, rapid heart rate, rapid breathing, and redness of the skin. The patient presents with abrupt, acute chest pain that exacerbates with chest expansion, along with subcutaneous crepitation, hyperresonance or tympany, reduced vocal fremitus, and diminished or missing breath sounds on the afflicted side.
Pulmonary edema. Pulmonary edema first presents with a dry cough that advances to a frothy or blood-tinged sputum, difficulty breathing during physical activity, repeated episodes of shortness of breath during the night, difficulty breathing, increased heart rate, rapid breathing, crackles in the chest, and a sensation of pressure in the ventricles. Severe pulmonary edema is characterised by increased respiratory rate and effort, coupled with coarse diffuse crackles and coughing that generates frothy, bloody sputum.
Pulmonary embolism
An acute pulmonary embolism can rapidly cause a dry cough accompanied by shortness of breath and chest discomfort that is either pleuritic or anginal. However, the cough usually generates phlegm with a blood-tinged appearance. In addition to tachycardia and a low-grade fever, less frequent indications and symptoms include excessive coughing up of blood, splinting of the chest, swelling of the legs, and, in cases of a significant embolism, cyanosis, fainting, and distension of the jugular vein. In addition, the patient may exhibit a pleural friction rub, widespread wheezing, dullness upon percussion, and reduced breath sounds.
Sarcoidosis
Sarcoidosis is characterised by a nonproductive cough, with accompanying symptoms of dyspnea, substernal discomfort, and malaise. Furthermore, the patient may experience fatigue, arthralgia, myalgia, weight loss, tachypnea, crackles, lymphadenopathy, hepatosplenomegaly, skin lesions, vision impairment, dysphagia, and arrhythmias.
Severe acute respiratory syndrome (SARS)
The cause of SARS, an acute viral disease, is currently unknown; nonetheless, a new Coronavirus has been suggested as a potential explanation. While the majority of cases have been documented in Asia, namely in China, Vietnam, Singapore, and Thailand, others have emerged in Europe and North America. The incubation period ranges from 2 to 7 days, beginning with a temperature often exceeding 100.4°F [38°C]. Additional symptoms seen are headache, lethargy, dry, nonproductive cough, and dyspnea. The disease exhibits significant variability in its severity, encompassing mild sickness, pneumonia, and, in certain instances, advancing to respiratory failure and mortality.
Tracheobronchitis (acute)
Initially, tracheobronchitis causes a nonproductive cough that subsequently becomes productive as the amount of secretions increases. Common symptoms that often occur before the cough begins include chills, a sore throat, a mild fever, muscle and back pain, and substernal tightness. Commonly heard are rhonchi and wheezes. Severe sickness results in a raised body temperature ranging from 101°F to 102°F (38.3°C to 38.9°C) and maybe bronchospasm, characterized by intense wheezing and heightened coughing.
Tularemia
Tularemia, typically referred to as rabbit fever, is the result of infection by the gram-negative, non-spore-forming bacterium Francisella tularensis. Usually a rural ailment, it is prevalent in wild animals, water, and damp soil. Transmission of the disease to humans occurs via the bite of a diseased bug or tick, direct contact with infected animal corpses, consumption of contaminated water, or inhalation of the germs. It is identified as a potential airborne agent for use in biological warfare. Following inhalation of the organism, signs and symptoms include sudden onset of fever, chills, headache, widespread muscle soreness, nonproductive cough, shortness of breath, chest discomfort with pleuria, and swelling of the chest.
Additional contributing factors
Medical diagnostic testing. Clinical evaluations of pulmonary function (PFTs) and bronchoscopy may activatemay activate cough receptors and elicit coughing.
Therapies. Pruritus of the carina during suctioning or the insertion of deep endotracheal or tracheal tubes might induce a paroxysmal or hacking cough. Coughing that is not productive can also be caused by intermittent positive-pressure breathing or spirometry. Several inhalants, including pentamidine, can induce coughing.
Guidelines for Pediatric Populations
Evaluation of a nonproductive cough in newborns and young children can be challenging due to its inability to be deliberately caused and the need for careful observation.
Aspiration of a foreign body, particularly in children aged 6 months to 4 years, may be indicated by a quick beginning of paroxysmal nonproductive coughing. Nonproductive coughing can also arise from many syndromes that impact neonates and young children. Within the context of asthma, a distinctive nonproductive "tight" cough might manifest abruptly or gradually at the onset of an attack. In most cases, the cough becomes productive towards the latter stages of the disease. In cases of bacterial pneumonia, a nonproductive, hacking cough develops (
Rapidly and effectively gets productive throughout a span of 2 to 3 days. The onset of acute bronchiolitis is most common at the age of 6, characterized by intermittent bouts of nonproductive coughing that increase in frequency as the condition advances. Acute otitis media, a prevalent condition in newborns and young children because to their constricted eustachian tubes, also results in unproductive coughing.
Generally, a kid afflicted with measles experiences a mild, unproductive, hacking cough that worsens with time. Cystic fibrosis may initially manifest as a nonproductive, paroxysmal cough caused by retained secretions. Life-threatening pertussis causes a cough that transitions to paroxysmal, characterized by an inspiratory "whoop" or crowing sound upon inspiration. Allergic airway hyperactivity leads to a persistent nonproductive cough that worsens with physical activity or contact with cold air. Psychogenic coughing can manifest in children experiencing stress, strong emotional stimulation, or a desire for attention.
Guidelines for Geriatrics
Elderly people should always be questioned about nonproductive coughing since it could suggest a severe acute or chronic disease.
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