RT Journal Article SR Electronic T1 Phenytoin toxicity: A cause of reversible monoplegia JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 438 OP 439 VO 54 IS 5 A1 Abdulhadi, Mohamed H. A1 Notman, Douglas D. A1 Cardon, Grant C. A1 Johnston, Presley M. YR 1987 UL http://www.ccjm.org/content/54/5/438.abstract AB Phenytoin sodium (Dilantin), a frequently used anticonvulsant, has many well-recognized side effects. Of these, neurological ones are prominent and, when present, usually consist of ataxia, nystagmus, or dysarthria. Phenytoin toxicity in patients with previous strokes may present as a “re-stroke” syndrome. This paper reports a rare but recognizable complication in a patient in whom reversible monoplegia, a focal neurological deficit, developed during long-term phenytoin therapy for grand mal seizures.