Sarcoidosis is a systemic granulomatous disease of unidentified cause, most commonly affecting the lungs, heart, eyes and skin; neurologic involvement is seen in approximately 5% of cases.
Neurologic involvement in sarcoidosis could affect the brain parenchyma, meninges, or indeed any other site of the central nervous system; however, cranial nerve involvement is the most site of neurologic involvement.
The most frequently affected cranial nerve in neurologic sarcoidosis is the facial nerve, with 40~60% of cases manifesting facial paralysis.
We encountered a case of sarcoidosis in which facial paralysis was the presenting symptom.
It is important to rule out intracranial lesions or neuromuscular disorders as the cause in patients presenting with facial paralysis, and evaluation by chest X-ray, electrocardiography, brain MRI is important with the findings such as the shifted strain of the forehead constantly.
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