Severe but reversible neurotoxicity from acyclovir.
D000212:Acyclovir / Q000009:adverse effects*; D000368:Aged; D002493:Central Nervous System Diseases / Q000139:chemically induced*; D005260:Female; D006562:Herpes Zoster / Q000188:drug therapy; D006801:Humans
D000212:Acyclovir