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Complex motor fluctuations and dyskinesias ("on-off" phenomenon) in Parkinson's disease can be corrected by parenteral administration of levodopa, levodopa-methyl-ester, lisuride and apomorphine. Levodopa and levodopa-methyl-ester may only be administered intravenously because of their low solubility. Lisuride and apomorphine are readily absorbed after… (More)
Seventeen lisuride infusions were given to 12 patients with Parkinson's disease who showed daily oscillations in motor performance. The mean lisuride dose given in continuous intravenous infusion was 0.59 mg (range, 0.3 to 1.0 mg) during a mean period of 9.0 hours (range, 5 to 12 hours). A significant reduction in the number of hours "off" was obtained in… (More)
Five patients with myoclonus were treated with oral piracetam (8-9 g/day). All patients had action-sensitive and/or stimulus-sensitive myoclonus and enhanced amplitude of somatosensory evoked potentials. Piracetam produced a marked reduction of the myoclonus in the five subjects without side effects. In view of its excellent tolerance and synergism with… (More)
Prevalence figures for inherited neuromuscular disorders are important both for health care planning purposes and for evaluating the need for DNA diagnostic services for eugenic approaches. We screened for the prevalence of myotonic dystrophy (MyD) through extensive inquiry of neurologic and primary health services of Guipúzcoa (Basque Country, northern… (More)
Two patients with a diagnosis of olivo-ponto-cerebellar atrophy developed cortical reflex myoclonus to visual (flash) and somaesthetic stimuli. Oral treatment with levodopacarbidopa (1000/100 mg) or subcutaneous administration of apomorphine (1 mg) abolished the visually-triggered myoclonus, without modifying reflex myoclonus to electrical or tactile… (More)
Several toxins produce encephalopathies in which myoclonus can be a prominent feature. These include intoxications with bismuth, methyl bromide, cooking oil containing anilines, and tetraethyl lead. The clinical features in many cases resemble the action myoclonus syndrome of posthypoxic encephalopathy.