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Article
January 1981

Tick Paralysis With Persistent Weakness and Electromyographic Abnormalities

Author Affiliations

From the Departments of Neurology (Dr J. R. Donat) and Pediatrics (Dr J. F. Donat), Louisiana State University Medical Center, Shreveport. Drs Donat are now with University Hospital, Univer-; sity of Saskatchewan, Saskatoon, Canada.

Arch Neurol. 1981;38(1):59-61. doi:10.1001/archneur.1981.00510010085020
Abstract

• A 3-year-old boy had tick paralysis characterized by ataxia, weakness in the distal portions of the extremities, and hyporeflexia. Unlike most patients with this condition, his weakness receded extremely slowly during a period of months. In addition to the typical reduction in amplitude of motor responses, there were striking electromyographic abnormalities that, to our knowledge, have not previously been reported in tick paralysis. The early appearance and presistence of fibrillation potentials suggested a structural lesion of distal motor axons.

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