Deviated

Nervous System & Special Senses


{"ops":[{"insert":"Diagnosis and reasoning"},{"insert":"\n","attributes":{"header":1}},{"insert":"When a patient presents with acute facial weakness, the first and foremost consideration is to determine if the weakness is central or peripheral in origin; note that the most common etiology for central weakness is stroke - hence the concern.\n\nIn this patient, examination shows weakness of the entire left side of the face, including the forehead; sensation is unaffected. This perfectly corresponds to a lower motor neuron (LMN) lesion of the facial nerve (CN VII); thus, the weakness is peripheral in nature.\n\nThere are no other neurological deficits, establishing this to be an isolated lesion of the facial nerve.\n\nBell\u0027s palsy is by far the most common cause of peripheral facial weakness, accounting for between 60% to 75% of such cases; the "}]}

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