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Symptoms and Signs – Differential Diagnosis of Racoon Eyes
Periorbital Hyperpigmentation or Raccoon eyes are bilateral periorbital ecchymoses that occur without facial soft tissue damage. This indication typically indicates a basilar skull fracture, arising from trauma that splits the meninges and results in venous sinus bleeding into the arachnoid villi and cranial sinuses. Raccoon eyes may serve as the sole indicator of a basilar skull fracture, which is not usually detectable on skull X-rays. Their presence indicates the necessity for meticulous evaluation to identify latent trauma, as a basilar skull fracture may damage cranial nerves, blood vessels, and the brainstem. Periorbital ecchymosis may also manifest following a craniotomy if the procedure results in a meningeal laceration.
Medical History and Physical Assessment
Upon the identification of periorbital ecchymosis, assess the patient's vital signs and ascertain the timing and nature of the head trauma. Refer to Recognizing Raccoon Eyes, page 626. Subsequently, assess the degree of underlying trauma. Commence by assessing the patient's level of awareness (LOC) utilizing the Glasgow Coma Scale.. Subsequently, assess cranial nerve (CN) functionality, particularly CN I (olfactory), III (oculomotor), IV (trochlear), VI (abducens), and VII (facial).
Evaluate for indicators of elevated intracranial pressure. Should the patient's condition allow, also assess his visual acuity and gross auditory function. Observe for abnormalities in the facial or cranial bones, along with edema, localized discomfort, Battle's sign, or lacerations on the face or scalp. Examine for ecchymoses on the mastoid bone. Examine for bleeding or cerebrospinal fluid (CSF) discharge from the nasal passages or auditory canals. Additionally, assess the drainage using a sterile 4″ × 4″ gauze pad and observe for the presence of a halo sign—a ring of clear fluid encircling the drainage, indicative of cerebrospinal fluid (CSF). Additionally, employ a glucose reagent strip to assess clear exudate for glucose content. An abnormal test result suggests CSF, as mucus lacks glucose. Etiological Factors Fracture of the basilar skull. A basilar skull fracture results in periorbital ecchymosis, commonly referred to as raccoon eyes, following head trauma that does not affect the orbital region.
Symptoms and indicators associated with the fracture location may encompass pharyngeal bleeding, epistaxis, rhinorrhea, otorrhea, and a bulging tympanic membrane due to blood or cerebrospinal fluid. The patient may encounter auditory impairment, cephalalgia, nausea, emesis, cranial nerve dysfunction, and altered level of consciousness. He may also demonstrate a good Battle's sign.
Alternative Causes
Operative procedure. Periorbital ecchymosis following craniotomy may signify a meningeal rupture and hemorrhage into the sinuses. Particular Considerations Maintain the patient on absolute bed rest. Conduct regular neurologic assessments to reassess his level of consciousness. Additionally, monitor his vital signs on an hourly basis; remain vigilant for alterations such as bradypnea, bradycardia, hypertension, and pyrexia. To prevent exacerbation of a dural tear, advise the patient against nasal blowing, severe coughing, or straining. If otorrhea or rhinorrhea is evident, do not attempt to halt the discharge. Instead, position a sterile, loose gauze pad beneath the nose or ear to absorb exudate. Assess the volume and evaluate it using a glucose reagent strip to verify or exclude cerebrospinal fluid leakage.
Identifying Periorbital Ecchymosis
Raccoon eyes may typically be distinguished from the "black eye" resulting from facial injuries. Raccoon eyes (shown on the right) are consistently bilateral. They manifest 2 to 3 days subsequent to a closed head injury that causes a basilar skull fracture. Conversely, periorbital ecchymosis resulting from facial trauma may involve one or both eyes. It typically manifests within hours of the injury. To avert additional damage to the mucous membranes and the risk of infection, do not suction or insert a nasogastric tube via the patient's nostril. Monitor the patient for indications of meningitis, including fever and nuchal rigidity, and anticipate the administration of a preventive antibiotic. Prepare the patient for diagnostic examinations, including a skull X-ray and potentially a computed tomography scan. If the dural tear does not heal naturally, contrast cisternography may be used to identify the tear, potentially followed by corrective surgery.
Patient Consultation Identify the indications and symptoms of neurological decline that the patient should communicate, as well as the necessary activity restrictions. Instruct the patient on the management of a scalp laceration. Pediatric Guidelines Periorbital ecchymosis in children is typically indicative of a basilar skull fracture resulting from a fall.
Periorbital Hyperpigmentation or Raccoon eyes are bilateral periorbital ecchymoses that occur without facial soft tissue damage. This indication typically indicates a basilar skull fracture, arising from trauma that splits the meninges and results in venous sinus bleeding into the arachnoid villi and cranial sinuses. Raccoon eyes may serve as the sole indicator of a basilar skull fracture, which is not usually detectable on skull X-rays. Their presence indicates the necessity for meticulous evaluation to identify latent trauma, as a basilar skull fracture may damage cranial nerves, blood vessels, and the brainstem. Periorbital ecchymosis may also manifest following a craniotomy if the procedure results in a meningeal laceration.
Medical History and Physical Assessment
Upon the identification of periorbital ecchymosis, assess the patient's vital signs and ascertain the timing and nature of the head trauma. Refer to Recognizing Raccoon Eyes, page 626. Subsequently, assess the degree of underlying trauma. Commence by assessing the patient's level of awareness (LOC) utilizing the Glasgow Coma Scale.. Subsequently, assess cranial nerve (CN) functionality, particularly CN I (olfactory), III (oculomotor), IV (trochlear), VI (abducens), and VII (facial).
Evaluate for indicators of elevated intracranial pressure. Should the patient's condition allow, also assess his visual acuity and gross auditory function. Observe for abnormalities in the facial or cranial bones, along with edema, localized discomfort, Battle's sign, or lacerations on the face or scalp. Examine for ecchymoses on the mastoid bone. Examine for bleeding or cerebrospinal fluid (CSF) discharge from the nasal passages or auditory canals. Additionally, assess the drainage using a sterile 4″ × 4″ gauze pad and observe for the presence of a halo sign—a ring of clear fluid encircling the drainage, indicative of cerebrospinal fluid (CSF). Additionally, employ a glucose reagent strip to assess clear exudate for glucose content. An abnormal test result suggests CSF, as mucus lacks glucose. Etiological Factors Fracture of the basilar skull. A basilar skull fracture results in periorbital ecchymosis, commonly referred to as raccoon eyes, following head trauma that does not affect the orbital region.
Symptoms and indicators associated with the fracture location may encompass pharyngeal bleeding, epistaxis, rhinorrhea, otorrhea, and a bulging tympanic membrane due to blood or cerebrospinal fluid. The patient may encounter auditory impairment, cephalalgia, nausea, emesis, cranial nerve dysfunction, and altered level of consciousness. He may also demonstrate a good Battle's sign.
Alternative Causes
Operative procedure. Periorbital ecchymosis following craniotomy may signify a meningeal rupture and hemorrhage into the sinuses. Particular Considerations Maintain the patient on absolute bed rest. Conduct regular neurologic assessments to reassess his level of consciousness. Additionally, monitor his vital signs on an hourly basis; remain vigilant for alterations such as bradypnea, bradycardia, hypertension, and pyrexia. To prevent exacerbation of a dural tear, advise the patient against nasal blowing, severe coughing, or straining. If otorrhea or rhinorrhea is evident, do not attempt to halt the discharge. Instead, position a sterile, loose gauze pad beneath the nose or ear to absorb exudate. Assess the volume and evaluate it using a glucose reagent strip to verify or exclude cerebrospinal fluid leakage.
Identifying Periorbital Ecchymosis
Raccoon eyes may typically be distinguished from the "black eye" resulting from facial injuries. Raccoon eyes (shown on the right) are consistently bilateral. They manifest 2 to 3 days subsequent to a closed head injury that causes a basilar skull fracture. Conversely, periorbital ecchymosis resulting from facial trauma may involve one or both eyes. It typically manifests within hours of the injury. To avert additional damage to the mucous membranes and the risk of infection, do not suction or insert a nasogastric tube via the patient's nostril. Monitor the patient for indications of meningitis, including fever and nuchal rigidity, and anticipate the administration of a preventive antibiotic. Prepare the patient for diagnostic examinations, including a skull X-ray and potentially a computed tomography scan. If the dural tear does not heal naturally, contrast cisternography may be used to identify the tear, potentially followed by corrective surgery.
Patient Consultation Identify the indications and symptoms of neurological decline that the patient should communicate, as well as the necessary activity restrictions. Instruct the patient on the management of a scalp laceration. Pediatric Guidelines Periorbital ecchymosis in children is typically indicative of a basilar skull fracture resulting from a fall.
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