Case 45-1980

Abstract
Presentation of Case First admission. A 43-year-old man was admitted to the hospital because of ataxia.He was well until one year earlier, when herpes zoster appeared in the right eighth thoracic distribution and cleared within two weeks. Seven months before admission he began to experience mild vertigo, which persisted. One month later a physician found that the cerebrospinal fluid and a computed tomographic (CT) scan of the brain were normal. Four months before entry injections of bacillus Calmette–Guérin (BCG) vaccine and transfer factor were administered, without improvement. The patient began to have episodes of horizontal diplopia, a change . . .