A probable association of acute dystonia with gemifloxacin administration.

Gemifloxacin is a recently introduced fluoroquinolone antibiotic frequently used for its broad spectrum and once-daily dosing. Fluoroquinolones are associated with various neuropsychiatric side effects, such as seizures, insomnia, confusion, lightheadedness, psychosis, paranoia and hallucinations. We report a case of a 36-year-old woman given gemifloxacin for an upper respiratory tract infection who developed acute dystonia on the third day following therapy initiation. The clinical implications are discussed.