Neurologist
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Sarcoidosis affects the central nervous system more frequently than previously appreciated. The diagnosis of neurosarcoidosis is often delayed, potentially leading to serious complications. Symptoms, when present, are not specific, may be subtle and resemble those of other neurologic diseases. ⋯ Neurologists should be aware of the varying presentations of neurosarcoidosis since early recognition of neurologic involvement in patients with undiagnosed or proven sarcoidosis is currently possible and critical to the prevention of disabling complications.
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A 24-year-old woman presented with right face pain and blurry vision. Examination revealed right pupil-sparing third nerve palsy and decreased sensation in the second and third divisions of the right trigeminal nerve. MRI demonstrated right cavernous sinus enhancement. ⋯ High-dose corticosteroid therapy again led to resolution of symptoms. This case demonstrates that Tolosa-Hunt syndrome can rarely recur on the contralateral side. MRI of this presentation has not been previously reported in the literature.
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Patients with lower extremity sensory symptoms and pain but without clinical or standard neurophysiological examination abnormalities may have a small fiber neuropathy. Skin biopsy with intraepidermal nerve fiber density (IENFD) assessment has been promoted as a diagnostic tool for such patients. ⋯ Detection of reduced IENFD using skin biopsy may be sensitive and specific for clinically-defined syndromes consistent with small fiber neuropathy. Skin biopsy appears to have greater diagnostic utility than the neurologic examination and quantitative sensory testing, both of which rely heavily on subjective patient perception. Prospective studies that evaluate quantitative methodology (rather than modalities that rely on patient report) and do not include the diagnostic tests in the reference standard are needed. Consensus is needed regarding a reference standard definition for small fiber neuropathy.