DONALD R. JOHNS, M.D.
To the editor: Bell's palsy is an acute, idiopathic, peripheral neuropathy of the facial nerve. It is the most frequently noted cranial neuropathy and commonly brings patients to physicians in many different disciplines. Although imprecise, the site of facial nerve lesions may be indicated clinically by involvement of the chorda tympani nerve (dysgeusia), stapedius branch (hyperacusis), and greater superficial petrosal nerve (impaired lacrimation) in progressively more proximal lesions (1). The clinical assessment of hyperacusis is limited, which is unfortunate because this disorder has been identified as an independent risk factor for a severe course or poor prognosis (2, 3).
JOHNS DR. Assessment of Hyperacusis in Bell's Palsy. Ann Intern Med. ;105:973. doi: 10.7326/0003-4819-105-6-973_1
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Published: Ann Intern Med. 1986;105(6):973.
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