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Mogens Dam, MD

Arch Neurol. 1970;22(1):64-67.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

AMONG PHENYL derivatives with anticonvulsant properties, diphenylhydantoin (phenytoin) was the one which produced the greatest rise in the convulsant threshold for electrical stimuli and, at the same time, had the least hypnotic effect in cats¹; prolonged peroral administration was well tolerated.² On a regimen of 200 to 600 mg daily, 15% of patients developed vertigo, ataxia, tremor, diplopia, and nausea. The symptoms and signs of intoxication disappeared when the dosage was reduced.³

More than 20 years later, Utterback et al⁴ reported severe cerebellar degeneration in a patient with grand mal, who had been receiving large doses of diphenylhydantoin. Similar changes were found in cats. Since then, others have reported cerebellar degeneration,^5-11 and the serum concentration was thought to be related to the pathology.^9,11

Among reliable signs of cerebellar degeneration, loss of Purkinje's cells has been reported but not glial proliferation. Other degenerative changes . . . [Full Text PDF of this Article]

Author Affiliations
Copenhagen

From the Institute of Neurophysiology and the Laboratory of Neuropathology, University of Copenhagen, Copenhagen.

Footnotes
Submitted for publication July 16, 1969; accepted Aug 20.

Reprint requests to the Institute of Neurophysiology, Juliane Maries vej 36, 2100 Copenhagen.

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