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Dermatology - Sweet Syndrome
A rare, sudden, and recurring cutaneous reaction caused by cytokines and related with several causes. The age at which symptoms first appear is typically between 30 and 60 years, with a higher prevalence in women compared to men.
Prodromes are characterized by fever and infections in the upper respiratory tract, which may also involve gastrointestinal symptoms, tonsillitis, headache, arthralgia, and malaise. These symptoms often occur 1-3 weeks before the appearance of lesions.
Abnormalities
The lesions are characterized by their bright red color, smooth texture, and tenderness. They appear as little papules, about 2-4 mm in diameter, which merge together to form irregular, well-defined, inflamed plaques. Pseudovesiculation refers to a severe swelling that mimics the appearance of vesiculation. Lesions develop quickly and, as they progress, a central clearance may cause them to form round or curved patterns. Small, shallow pustules may develop. In cases where leukemia is present, the development of bullous lesions is possible and can resemble pyoderma gangrenosum.
Lesions can occur as a single or several, and they may be distributed asymmetrically or symmetrically. They are most frequently found on the face, neck, and upper extremities, but can also appear on the lower limbs. In certain cases, the lesions may be deep within the fat, resembling panniculitis or erythema nodosum. Truncal lesions are few yet prevalent, and they can manifest in a widespread manner, including generalized forms. Conjunctivitis and episcleritis may coexist.
The diagnosis is made through the assessment of clinical features, examination of tissue samples under a microscope, and confirmation with a skin biopsy. The differential diagnosis comprises erythema multiforme, erythema nodosum, prevesicular herpes simplex infection, and preulcerative pyoderma gangrenosum.
If left untreated, the lesions would gradually increase in size over a span of days or weeks and then disappear without leaving any scars. Lesions are resolved within a few days with the use of oral prednisone, administered at a dosage of 30-50 mg per day and gradually reduced over a period of 2-3 weeks. Alternatively, patients exhibit a positive response to dapsone at a dosage of 100 mg per day, or to potassium iodide. Recurrences manifest in 50% of patients, frequently affecting previously affected areas. Exclude the possibility of sepsis.
A rare, sudden, and recurring cutaneous reaction caused by cytokines and related with several causes. The age at which symptoms first appear is typically between 30 and 60 years, with a higher prevalence in women compared to men.
Prodromes are characterized by fever and infections in the upper respiratory tract, which may also involve gastrointestinal symptoms, tonsillitis, headache, arthralgia, and malaise. These symptoms often occur 1-3 weeks before the appearance of lesions.
Abnormalities
The lesions are characterized by their bright red color, smooth texture, and tenderness. They appear as little papules, about 2-4 mm in diameter, which merge together to form irregular, well-defined, inflamed plaques. Pseudovesiculation refers to a severe swelling that mimics the appearance of vesiculation. Lesions develop quickly and, as they progress, a central clearance may cause them to form round or curved patterns. Small, shallow pustules may develop. In cases where leukemia is present, the development of bullous lesions is possible and can resemble pyoderma gangrenosum.
Lesions can occur as a single or several, and they may be distributed asymmetrically or symmetrically. They are most frequently found on the face, neck, and upper extremities, but can also appear on the lower limbs. In certain cases, the lesions may be deep within the fat, resembling panniculitis or erythema nodosum. Truncal lesions are few yet prevalent, and they can manifest in a widespread manner, including generalized forms. Conjunctivitis and episcleritis may coexist.
The diagnosis is made through the assessment of clinical features, examination of tissue samples under a microscope, and confirmation with a skin biopsy. The differential diagnosis comprises erythema multiforme, erythema nodosum, prevesicular herpes simplex infection, and preulcerative pyoderma gangrenosum.
If left untreated, the lesions would gradually increase in size over a span of days or weeks and then disappear without leaving any scars. Lesions are resolved within a few days with the use of oral prednisone, administered at a dosage of 30-50 mg per day and gradually reduced over a period of 2-3 weeks. Alternatively, patients exhibit a positive response to dapsone at a dosage of 100 mg per day, or to potassium iodide. Recurrences manifest in 50% of patients, frequently affecting previously affected areas. Exclude the possibility of sepsis.
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Dermatology - Seborrheic Dermatitis
Dermatitis is a prevalent and persistent skin condition characterized by inflammation and flaking. It primarily affects areas with high sebaceous gland activity, including the face, scalp, presternal area, and body folds. Dandruff refers to mild seborrheic dermatitis occurring on the scalp. Seborrheic Dermatitis (SD) is a condition that is more prevalent in males and affects approximately 2-5% of the population. It typically begins in infancy, adolescence, or most commonly, during maturity, namely between the ages of 20 and 50.
The onset of symptoms is gradual, and in some people, symptoms worsen in cold or dry settings. Sunlight can trigger flare-ups, but it also promotes improvement in certain patients. The presence of varied pruritus is frequently exacerbated by perspiration.
Abnormalities
The skin can seem orange-red or gray-white, and may have greasy or white dry scaling macules, papules of different sizes (ranging from 5 to 20 mm), or patches with well-defined edges. The scalp is mostly characterized by noticeable scaling, commonly referred to as "dandruff". Lesions on the trunk are distributed in a dispersed, separate, and multi-cyclic pattern, and on the face and trunk, lesions are separate and scattered. The lesions in the body folds are widespread, exudative, well-defined, and very red in color, often accompanied by erosions and fissures.
The diagnosis is made based on clinical observations, and the possible conditions to consider include psoriasis vulgaris, impetigo, dermatophytosis, pityriasis versicolor, intertriginous candidiasis, subacute lupus erythematosus, "seborrheic" papules in secondary syphilis, Langerhans cell histiocytosis, acrodermatitis enteropathica, zinc deficiency, pemphigus, and glucagonoma syndrome.
Advise people to utilize shampoos that contain selenium sulfide, zinc pyrithione, and/or tar. Alternatively, recommend prescribing a 2% ketoconazole shampoo. The foam from these shampoos can be applied to the face and chest. In cases of high severity, apply low-potency topical glucocorticoids following shampooing. For newborns, eliminate crusts by applying warm oil compresses, then using 2% ketoconazole shampoo, and either 1–2.5% hydrocortisone cream, 2% ketoconazole cream, or 1% pimecrolimus cream. To address maintenance issues, if shampoo alone proves to be unsuccessful, utilize a solution containing 3% sulfur precipitate and 2% salicylic acid in an oil-in-water base.
Regular application of hydrocortisone cream with a concentration of 1-2.5% is effective, although it is necessary to closely observe for any signs of atrophy.
Pimecrolimus cream with a concentration of 1% and tacrolimus ointment with a concentration of 0.1% are both proven to be safe and efficacious.
Dermatitis is a prevalent and persistent skin condition characterized by inflammation and flaking. It primarily affects areas with high sebaceous gland activity, including the face, scalp, presternal area, and body folds. Dandruff refers to mild seborrheic dermatitis occurring on the scalp. Seborrheic Dermatitis (SD) is a condition that is more prevalent in males and affects approximately 2-5% of the population. It typically begins in infancy, adolescence, or most commonly, during maturity, namely between the ages of 20 and 50.
The onset of symptoms is gradual, and in some people, symptoms worsen in cold or dry settings. Sunlight can trigger flare-ups, but it also promotes improvement in certain patients. The presence of varied pruritus is frequently exacerbated by perspiration.
Abnormalities
The skin can seem orange-red or gray-white, and may have greasy or white dry scaling macules, papules of different sizes (ranging from 5 to 20 mm), or patches with well-defined edges. The scalp is mostly characterized by noticeable scaling, commonly referred to as "dandruff". Lesions on the trunk are distributed in a dispersed, separate, and multi-cyclic pattern, and on the face and trunk, lesions are separate and scattered. The lesions in the body folds are widespread, exudative, well-defined, and very red in color, often accompanied by erosions and fissures.
The diagnosis is made based on clinical observations, and the possible conditions to consider include psoriasis vulgaris, impetigo, dermatophytosis, pityriasis versicolor, intertriginous candidiasis, subacute lupus erythematosus, "seborrheic" papules in secondary syphilis, Langerhans cell histiocytosis, acrodermatitis enteropathica, zinc deficiency, pemphigus, and glucagonoma syndrome.
Advise people to utilize shampoos that contain selenium sulfide, zinc pyrithione, and/or tar. Alternatively, recommend prescribing a 2% ketoconazole shampoo. The foam from these shampoos can be applied to the face and chest. In cases of high severity, apply low-potency topical glucocorticoids following shampooing. For newborns, eliminate crusts by applying warm oil compresses, then using 2% ketoconazole shampoo, and either 1–2.5% hydrocortisone cream, 2% ketoconazole cream, or 1% pimecrolimus cream. To address maintenance issues, if shampoo alone proves to be unsuccessful, utilize a solution containing 3% sulfur precipitate and 2% salicylic acid in an oil-in-water base.
Regular application of hydrocortisone cream with a concentration of 1-2.5% is effective, although it is necessary to closely observe for any signs of atrophy.
Pimecrolimus cream with a concentration of 1% and tacrolimus ointment with a concentration of 0.1% are both proven to be safe and efficacious.
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Dermatology - Viral Exanthem
Primary systemic viral infections commonly manifest with distinctive mucocutaneous rashes, exanthems, and enanthems. An exanthem refers to a rash that appears on the skin as a result of a systemic condition. Enanthem, on the other hand, refers to mucosal lesions that are commonly connected with a systemic disorder that also causes an exanthem. These conditions are primarily caused by viral agents, although they can also result from bacterial, parasitic infections, or be triggered by drugs/toxins or autoimmune responses.
Certain viral exanthems have distinct morphologies, but, clinical symptoms alone may not always lead to an appropriate diagnosis. Obtaining a patient's medical history might provide valuable information, such as the time of year, any recent exposure to diseases, immunization records, past instances of skin rashes, and any symptoms experienced before the rash appeared. Measles is accompanied by conjunctivitis.
Prodrome refers to the early symptoms or warning signs that occur before the onset of a disease or medical condition.
The individual is experiencing an acute infection characterized by symptoms such as fever, fatigue, nasal congestion, sore throat, feelings of sickness, vomiting, diarrhea, stomach discomfort, and headache. The presence of lymphadenopathy, hepatomegaly, and splenomegaly is possible.
Morbilliform refers to a widespread rash that starts as individual spots and subsequently merges together. The rash typically appears in the central areas of the body, such as the head, neck, trunk, and proximal extremities, and spreads outward from there. Lesions have the potential to develop hemorrhage and exhibit petechiae. The scarlatiniform eruption manifests as a widespread and uniform redness of the skin. The vesicular eruptions first appear as small blisters with transparent fluid, which may develop into pustules. These pustules eventually detach and lead to erosions. Oropharyngeal lesions encompass several manifestations such as Koplik spots in cases of measles, petechiae on the soft palate (known as Forchheimer sign) in cytomegalovirus (CMV) or Epstein-Barr virus (EBV) infections, and microulcerative lesions in herpangina caused by coxsackie virus A.
The diagnosis is mostly based on clinical evaluation and can be further validated with serological or cultural analysis, depending on the specific requirements. Differential diagnosis encompasses cutaneous drug eruption, systemic lupus erythematosus, and Kawasaki syndrome, all of which have negative effects on the skin.
Supportive care is usually sufficient for most viral infections, however antiviral drugs might be beneficial in the early stages of the illness. Vaccination is a highly effective method for preventing most viral infections.
Primary systemic viral infections commonly manifest with distinctive mucocutaneous rashes, exanthems, and enanthems. An exanthem refers to a rash that appears on the skin as a result of a systemic condition. Enanthem, on the other hand, refers to mucosal lesions that are commonly connected with a systemic disorder that also causes an exanthem. These conditions are primarily caused by viral agents, although they can also result from bacterial, parasitic infections, or be triggered by drugs/toxins or autoimmune responses.
Certain viral exanthems have distinct morphologies, but, clinical symptoms alone may not always lead to an appropriate diagnosis. Obtaining a patient's medical history might provide valuable information, such as the time of year, any recent exposure to diseases, immunization records, past instances of skin rashes, and any symptoms experienced before the rash appeared. Measles is accompanied by conjunctivitis.
Prodrome refers to the early symptoms or warning signs that occur before the onset of a disease or medical condition.
The individual is experiencing an acute infection characterized by symptoms such as fever, fatigue, nasal congestion, sore throat, feelings of sickness, vomiting, diarrhea, stomach discomfort, and headache. The presence of lymphadenopathy, hepatomegaly, and splenomegaly is possible.
Morbilliform refers to a widespread rash that starts as individual spots and subsequently merges together. The rash typically appears in the central areas of the body, such as the head, neck, trunk, and proximal extremities, and spreads outward from there. Lesions have the potential to develop hemorrhage and exhibit petechiae. The scarlatiniform eruption manifests as a widespread and uniform redness of the skin. The vesicular eruptions first appear as small blisters with transparent fluid, which may develop into pustules. These pustules eventually detach and lead to erosions. Oropharyngeal lesions encompass several manifestations such as Koplik spots in cases of measles, petechiae on the soft palate (known as Forchheimer sign) in cytomegalovirus (CMV) or Epstein-Barr virus (EBV) infections, and microulcerative lesions in herpangina caused by coxsackie virus A.
The diagnosis is mostly based on clinical evaluation and can be further validated with serological or cultural analysis, depending on the specific requirements. Differential diagnosis encompasses cutaneous drug eruption, systemic lupus erythematosus, and Kawasaki syndrome, all of which have negative effects on the skin.
Supportive care is usually sufficient for most viral infections, however antiviral drugs might be beneficial in the early stages of the illness. Vaccination is a highly effective method for preventing most viral infections.
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Dermatology - Fissured tongue
A fissured tongue is a common occurrence in approximately 11% of the population and can also be linked to psoriasis, Down syndrome, acromegaly, and Sjögren syndrome.
The absence of symptoms is observed, but the dorsal surface of the tongue has many folds arranged in an anterior-posterior direction.
The diagnosis is based only on clinical observations and assessments.
This is a typical variation and does not require any intervention.
A fissured tongue is a common occurrence in approximately 11% of the population and can also be linked to psoriasis, Down syndrome, acromegaly, and Sjögren syndrome.
The absence of symptoms is observed, but the dorsal surface of the tongue has many folds arranged in an anterior-posterior direction.
The diagnosis is based only on clinical observations and assessments.
This is a typical variation and does not require any intervention.
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Dermatology - Nevus of Ota
Nevus of Ota is a pigmented skin abnormality that can either be present at birth or develop in early childhood or during puberty. It is prevalent among individuals of Asian heritage, however it is not exclusive to them.
The pigmentation can vary in intensity, ranging from modest to highly disfiguring. It can affect either one side or both sides of the body, and is characterized by a patchy, dark mixture of blue and brown hyperpigmentation on the skin. The condition mostly affects the skin and mucous membranes that are supplied by the first and second divisions of the trigeminal nerve. The blue coloration is caused by the existence of ectopic melanocytes within the dermis.
The diagnosis is established through clinical means.
Laser treatment is a highly effective method for addressing this disfiguring condition.
Nevus of Ota is a pigmented skin abnormality that can either be present at birth or develop in early childhood or during puberty. It is prevalent among individuals of Asian heritage, however it is not exclusive to them.
The pigmentation can vary in intensity, ranging from modest to highly disfiguring. It can affect either one side or both sides of the body, and is characterized by a patchy, dark mixture of blue and brown hyperpigmentation on the skin. The condition mostly affects the skin and mucous membranes that are supplied by the first and second divisions of the trigeminal nerve. The blue coloration is caused by the existence of ectopic melanocytes within the dermis.
The diagnosis is established through clinical means.
Laser treatment is a highly effective method for addressing this disfiguring condition.
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Dermatology - Chancroid
Haemophilus ducreyi, a gram-negative streptobacillus that is endemic in tropical and subtropical underdeveloped countries but rare in industrialized ones, is the cause of chancroid.
Four to seven days after exposure, a primary infection (break in epithelium) occurs at the site of inoculation, followed by lymphadenitis. Prepuce edema is frequent. Fifty percent of patients experience a painful, typically unilateral, gingual lymphadenitis 7–21 days following the original lesion.
A painful and irritable papule with an erythematous halo develops into an erosion, pustule, and ulcer. The base of the ulcer is friable with granulation tissue and covered in gray to yellow exudate. The ulcer's edges are sharp, undermined, and not indurated.
One or more ulcers may combine to become massive, serpiginous ulcers that are larger than two centimeters. An ulcer could heal before a buboe appears. Buboes can drain on their own and have erythema overlaying them.
One-third of patients had tender lymphadenopathy along with a painful ulcer, which suggests chancroid. The identification of H. ducreyi on specialized culture media is necessary for a conclusive diagnosis. Eliminate co-infections with T. pallidum, herpes simplex virus, and HIV. The differential include lymphogranuloma venereum, genital herpes, syphilis, trauma, inguinal hernia, plague, and tularemia.
Options for treatment include intramuscular ceftriaxone in a single dosage, ciprofloxacin 500 mg twice daily for three days (not recommended in pregnancy), erythromycin base 500 mg three times daily for seven days, and azithromycin 1 g in a single dose. There have been reports of erythromycin and ciprofloxacin resistance.
Haemophilus ducreyi, a gram-negative streptobacillus that is endemic in tropical and subtropical underdeveloped countries but rare in industrialized ones, is the cause of chancroid.
Four to seven days after exposure, a primary infection (break in epithelium) occurs at the site of inoculation, followed by lymphadenitis. Prepuce edema is frequent. Fifty percent of patients experience a painful, typically unilateral, gingual lymphadenitis 7–21 days following the original lesion.
A painful and irritable papule with an erythematous halo develops into an erosion, pustule, and ulcer. The base of the ulcer is friable with granulation tissue and covered in gray to yellow exudate. The ulcer's edges are sharp, undermined, and not indurated.
One or more ulcers may combine to become massive, serpiginous ulcers that are larger than two centimeters. An ulcer could heal before a buboe appears. Buboes can drain on their own and have erythema overlaying them.
One-third of patients had tender lymphadenopathy along with a painful ulcer, which suggests chancroid. The identification of H. ducreyi on specialized culture media is necessary for a conclusive diagnosis. Eliminate co-infections with T. pallidum, herpes simplex virus, and HIV. The differential include lymphogranuloma venereum, genital herpes, syphilis, trauma, inguinal hernia, plague, and tularemia.
Options for treatment include intramuscular ceftriaxone in a single dosage, ciprofloxacin 500 mg twice daily for three days (not recommended in pregnancy), erythromycin base 500 mg three times daily for seven days, and azithromycin 1 g in a single dose. There have been reports of erythromycin and ciprofloxacin resistance.
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Dermatology - Actinic Keratosis
UVB (290–320 nm) light, in particular, causes cumulative damage to keratinocytes during prolonged and recurrent sun exposure. The onset typically occurs in middle age and is more prevalent in people who spend a lot of time outside. Actinic keratosis is uncommon in people with darker skin and common in those with lighter complexion. More often, men are impacted.
Tender lesions can form over the course of months or years. People flinch when they are ridiculed.
Damage
Lesions on sun-exposed areas are distinct, dry, rough, adherent, scaly macules or papules that can be solitary or many. Usually, they are accompanied with dermatoheliosis. Scale removal is a painful and challenging process. Lesions are skin-colored, brown, or yellow-brown in appearance, with a reddish undertone frequently present. The lesion is "better felt than seen" because to its rough texture. Lesions are usually circular or oval, and less than 1 cm in size.
Differential diagnosis and diagnosis
Dermatopathology confirms the clinical diagnosis. The differential comprises flat warts, squamous cell carcinoma, superficial basal cell carcinoma, seborrheic keratosis, and chronic cutaneous lupus erythematosus.
While actinic keratoses can go away on their own, they typically persist for years and have the potential to develop into squamous cell carcinoma. Applying regular UVB/UVA sunscreen will help to prevent such incidents.
Although it produces considerable erythema and erosions, topical 5-Fluorouracil (5-FU) cream 5% administered twice daily for 2-4 weeks or longer is beneficial. If administered under occlusion and/or in conjunction with topical tretinoin, efficacy is enhanced and treatment duration may be decreased.
But this causes confluent erosions, which can necessitate hospitalization. Reepithelialization happens when the course of treatment is ended. Using mild cryosurgery as a pretreatment could increase effectiveness. Although it is quite successful, imiquimod, when administered twice a week for 16 weeks, also causes irritation and erosions. Both topical retinoids and diclofenac gel, however unpleasant, are useful in treating and preventing superficial actinic keratoses and dermatioheliosis.
The use of cotton-tipped applicators or light spray cryotherapy is beneficial, particularly when paired with topical retinoids. For large lesions, facial resurfacing or peels work well. For isolated lesions, laser surgery typically works well. Photodynamic therapy is a painful and laborious yet successful treatment.
UVB (290–320 nm) light, in particular, causes cumulative damage to keratinocytes during prolonged and recurrent sun exposure. The onset typically occurs in middle age and is more prevalent in people who spend a lot of time outside. Actinic keratosis is uncommon in people with darker skin and common in those with lighter complexion. More often, men are impacted.
Tender lesions can form over the course of months or years. People flinch when they are ridiculed.
Damage
Lesions on sun-exposed areas are distinct, dry, rough, adherent, scaly macules or papules that can be solitary or many. Usually, they are accompanied with dermatoheliosis. Scale removal is a painful and challenging process. Lesions are skin-colored, brown, or yellow-brown in appearance, with a reddish undertone frequently present. The lesion is "better felt than seen" because to its rough texture. Lesions are usually circular or oval, and less than 1 cm in size.
Differential diagnosis and diagnosis
Dermatopathology confirms the clinical diagnosis. The differential comprises flat warts, squamous cell carcinoma, superficial basal cell carcinoma, seborrheic keratosis, and chronic cutaneous lupus erythematosus.
While actinic keratoses can go away on their own, they typically persist for years and have the potential to develop into squamous cell carcinoma. Applying regular UVB/UVA sunscreen will help to prevent such incidents.
Although it produces considerable erythema and erosions, topical 5-Fluorouracil (5-FU) cream 5% administered twice daily for 2-4 weeks or longer is beneficial. If administered under occlusion and/or in conjunction with topical tretinoin, efficacy is enhanced and treatment duration may be decreased.
But this causes confluent erosions, which can necessitate hospitalization. Reepithelialization happens when the course of treatment is ended. Using mild cryosurgery as a pretreatment could increase effectiveness. Although it is quite successful, imiquimod, when administered twice a week for 16 weeks, also causes irritation and erosions. Both topical retinoids and diclofenac gel, however unpleasant, are useful in treating and preventing superficial actinic keratoses and dermatioheliosis.
The use of cotton-tipped applicators or light spray cryotherapy is beneficial, particularly when paired with topical retinoids. For large lesions, facial resurfacing or peels work well. For isolated lesions, laser surgery typically works well. Photodynamic therapy is a painful and laborious yet successful treatment.
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Dermatology - Pellagra
A diet low in tryptophan, niacin, or both can cause pellagra. A diet high in maize is typically the culprit.
The three Ds of pellagra are dementia, diarrhea, and dermatitis. Pressure and solar exposure determine changes in the skin.
Damage
On the dorsa of the hands, neck, and face, asymmetric itching and smarting erythema is followed by breakouts of vesicles and bullae, which may burst and crust to form scaly lesions. Subsequently, the skin develops fissures, cracks, and a clear separation from normal skin. It also becomes rough, lichenified, and indurated, with dark scales and crusts covering it.
The finding of lower urine metabolite levels confirms the diagnosis.
Complete resolution is achieved by taking 100–300 mg of niacinamide orally together with other B vitamins.
A diet low in tryptophan, niacin, or both can cause pellagra. A diet high in maize is typically the culprit.
The three Ds of pellagra are dementia, diarrhea, and dermatitis. Pressure and solar exposure determine changes in the skin.
Damage
On the dorsa of the hands, neck, and face, asymmetric itching and smarting erythema is followed by breakouts of vesicles and bullae, which may burst and crust to form scaly lesions. Subsequently, the skin develops fissures, cracks, and a clear separation from normal skin. It also becomes rough, lichenified, and indurated, with dark scales and crusts covering it.
The finding of lower urine metabolite levels confirms the diagnosis.
Complete resolution is achieved by taking 100–300 mg of niacinamide orally together with other B vitamins.
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Dermatology - Tinea Capitis
Tinea Capitis
A particular class of fungus known as dermatiophytes is responsible for the infection of keratinized cutaneous tissues that causes tinea; arthrospores from these species can live for up to a year in skin scales.
The most prevalent ways for transmission are from person to person, from animals, and, less frequently, via soil. Children are the main victims of tinea capitis, a dermatophytic infection of the scalp and hair.
When tinea capitis is severe and unpleasant, it can cause painful nodules that drain pus (kerion) and cause scarring alopecia. It can also manifest as noninflammatory scaling patches, scaling and broken-off hairs. Usually, hair regrows after receiving antifungal therapy.
Widespread or localized alopecia is the appearance of noninflammatory scaling. The term "gray patch" refers to a partial alopecia that is typically round in shape, has fine scale and sharp borders, many broken-off hairs, and a dull gray color from an arthrospore coating. Larger patches are created when smaller ones combine. "Black dot" lesions are broken-off hairs close to the scalp that cause patients with black hair to seem to have enlarged hair shafts or "dots." The lesion is usually widespread, ill-defined, and may have low-grade folliculitis.
Kerion and favus are inflammatory masses that drain pus from numerous apertures, much like honeycomb, and are characterized by swampy, purulent, inflamed nodules and plaques that are typically unpleasant. Instead of breaking off, hairs come out and are painless to pluck. Pellicles may release pus, create sinuses, or have grains that resemble mycetomas. The surrounding hairs are matted together and have a thick crust. Although a single plaque is typical, the entire scalp may develop many lesions. Associated lymphadenopathy is often seen.
Fungal hyphae can be seen by direct microscopy of the hair shaft (collected by plucking) and scalp scales (collected with a brush covered in a drop of potassium hydroxide, or KOH). In addition to psoriasis, atopic dermatitis, lichen simplex chronicus, alopecia areata, and chronic cutaneous lupus erythematosus, the differential includes impetigo, ecthyma, crusted scabies, and kerion or favus.
Oral antidermophytes that work well are allylamines like Systemic Terbinafine 250 mg tablets.
Fluconazole 100-, 150-, or 200-mg pills, or oral suspension (10 or 40 mg/mL), are substitutes for itraconazole 100-mg capsules or oral solution (10 mg/mL).
Tinea Capitis
A particular class of fungus known as dermatiophytes is responsible for the infection of keratinized cutaneous tissues that causes tinea; arthrospores from these species can live for up to a year in skin scales.
The most prevalent ways for transmission are from person to person, from animals, and, less frequently, via soil. Children are the main victims of tinea capitis, a dermatophytic infection of the scalp and hair.
When tinea capitis is severe and unpleasant, it can cause painful nodules that drain pus (kerion) and cause scarring alopecia. It can also manifest as noninflammatory scaling patches, scaling and broken-off hairs. Usually, hair regrows after receiving antifungal therapy.
Widespread or localized alopecia is the appearance of noninflammatory scaling. The term "gray patch" refers to a partial alopecia that is typically round in shape, has fine scale and sharp borders, many broken-off hairs, and a dull gray color from an arthrospore coating. Larger patches are created when smaller ones combine. "Black dot" lesions are broken-off hairs close to the scalp that cause patients with black hair to seem to have enlarged hair shafts or "dots." The lesion is usually widespread, ill-defined, and may have low-grade folliculitis.
Kerion and favus are inflammatory masses that drain pus from numerous apertures, much like honeycomb, and are characterized by swampy, purulent, inflamed nodules and plaques that are typically unpleasant. Instead of breaking off, hairs come out and are painless to pluck. Pellicles may release pus, create sinuses, or have grains that resemble mycetomas. The surrounding hairs are matted together and have a thick crust. Although a single plaque is typical, the entire scalp may develop many lesions. Associated lymphadenopathy is often seen.
Fungal hyphae can be seen by direct microscopy of the hair shaft (collected by plucking) and scalp scales (collected with a brush covered in a drop of potassium hydroxide, or KOH). In addition to psoriasis, atopic dermatitis, lichen simplex chronicus, alopecia areata, and chronic cutaneous lupus erythematosus, the differential includes impetigo, ecthyma, crusted scabies, and kerion or favus.
Oral antidermophytes that work well are allylamines like Systemic Terbinafine 250 mg tablets.
Fluconazole 100-, 150-, or 200-mg pills, or oral suspension (10 or 40 mg/mL), are substitutes for itraconazole 100-mg capsules or oral solution (10 mg/mL).
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Dermatology - Vitiligo
Vitiligo affects 1% of people globally and can have negative social and economic repercussions for people with darker skin. Men and women experience the same chronic illness, however women seek therapy more frequently. Although it can occur at any age, the most common range for onset is 10 to 30 years. uncommonly linked to alopecia areata, pernicious anemia, and thyroid disorders.
Many patients blame illnesses, physical trauma, or psychological stress for the onset. White or prematurely gray hair are possible. In macules of vitiligo, photoaging and solar keratosis may occur.
Sharply marginated, chalk-colored or pale white macules range in diameter from 5 mm to more than 5 cm, and they progressively get bigger as new ones form. Convex margins exist. The three colors of vitiligo—white, light brown, and dark brown—represent various disease phases. In a white macule, pigmentation surrounding a hair follicle indicates restored or persistent pigmentation.
Hypomelanotic macules the size of candy can also be seen. The edge of inflammatory vitiligo is more erythematous and can be itchy. A single site may have one or more macules indicative of focal vitiligo. The more prevalent type of vitiligo, known as generalized vitiligo, is typified by a broad distribution of depigmented macules that are frequently strikingly symmetrical around the mouth, eyes, fingers, elbows, and knees in addition to the low back and genital regions.
The perioral region, distal fingers and toes, lips, nipples, and genitalia are all included in the lip-tip pattern.
Large white patches are the result of confluent vitiligo, while widespread generalized vitiligo—also known as vitriligo universalis—may only leave a few regularly pigmented skin areas. Segmental vitiligo appears in a unilateral pattern, usually does not spread beyond it, and is extremely stable once it does.
Clinical diagnosis is made. Pityriasis alba, versicolor, leprosy, postinflammatory leukoderma, mycosis fungoides, chemical leukoderma, white nevi, hypomelanosis, tuberous sclerosis, Vogt-Koyanagi-Harada syndrome, Waardenburg syndrome, and piebaldism are among the conditions that fall under the differential category.
Vitiligo is unaffected by the treatment of underlying diseases. To protect the depigmented skin, use sunscreen; for people with lighter skin, this is frequently sufficient. Darker skinned people might cover up their skin tone with makeup, dyes, or self-tanning products.
Repigment local macules by applying topical psoralens, glucocorticoids, and UVA therapy.
One may try minigrafting or systemic photochemotherapy for generalized repigmentation. Alternatively, some patients choose to undergo depigmentation with bleaching chemicals, such as 20% hydroquinone monobenzylether.
Vitiligo affects 1% of people globally and can have negative social and economic repercussions for people with darker skin. Men and women experience the same chronic illness, however women seek therapy more frequently. Although it can occur at any age, the most common range for onset is 10 to 30 years. uncommonly linked to alopecia areata, pernicious anemia, and thyroid disorders.
Many patients blame illnesses, physical trauma, or psychological stress for the onset. White or prematurely gray hair are possible. In macules of vitiligo, photoaging and solar keratosis may occur.
Sharply marginated, chalk-colored or pale white macules range in diameter from 5 mm to more than 5 cm, and they progressively get bigger as new ones form. Convex margins exist. The three colors of vitiligo—white, light brown, and dark brown—represent various disease phases. In a white macule, pigmentation surrounding a hair follicle indicates restored or persistent pigmentation.
Hypomelanotic macules the size of candy can also be seen. The edge of inflammatory vitiligo is more erythematous and can be itchy. A single site may have one or more macules indicative of focal vitiligo. The more prevalent type of vitiligo, known as generalized vitiligo, is typified by a broad distribution of depigmented macules that are frequently strikingly symmetrical around the mouth, eyes, fingers, elbows, and knees in addition to the low back and genital regions.
The perioral region, distal fingers and toes, lips, nipples, and genitalia are all included in the lip-tip pattern.
Large white patches are the result of confluent vitiligo, while widespread generalized vitiligo—also known as vitriligo universalis—may only leave a few regularly pigmented skin areas. Segmental vitiligo appears in a unilateral pattern, usually does not spread beyond it, and is extremely stable once it does.
Clinical diagnosis is made. Pityriasis alba, versicolor, leprosy, postinflammatory leukoderma, mycosis fungoides, chemical leukoderma, white nevi, hypomelanosis, tuberous sclerosis, Vogt-Koyanagi-Harada syndrome, Waardenburg syndrome, and piebaldism are among the conditions that fall under the differential category.
Vitiligo is unaffected by the treatment of underlying diseases. To protect the depigmented skin, use sunscreen; for people with lighter skin, this is frequently sufficient. Darker skinned people might cover up their skin tone with makeup, dyes, or self-tanning products.
Repigment local macules by applying topical psoralens, glucocorticoids, and UVA therapy.
One may try minigrafting or systemic photochemotherapy for generalized repigmentation. Alternatively, some patients choose to undergo depigmentation with bleaching chemicals, such as 20% hydroquinone monobenzylether.
