Restless legs syndrome and nocturnal myoclonus: initial clinical manifestation of familial amyloid polyneuropathy.

Salvi, F; Montagna, P; Plasmati, R; Rubboli, G; Cirignotta, F; Veilleux, M; Lugaresi, E; Tassinari, C A · J Neurol Neurosurg Psychiatry · 1990

case_report · Level V

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Abstract

Restless legs syndrome was the first isolated clinical manifestation in four siblings of a family with familial amyloid polyneuropathy. Clinical and electrophysiological evidence of peripheral neuropathy appeared after a variable time interval. Polysomnography showed abnormal sleep patterns and nocturnal myoclonus in all patients. The restless legs syndrome responded favourably to clonazepam.

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