Trovafloxacin-induced weakness due to a demyelinating polyneuropathy.

Fluoroquinolones have been associated with peripheral sensory disorders and weakness, especially in patients with underlying myasthenia gravis or myasthenia-like Eaton-Lambert syndrome. Trovafloxacin is a relatively new quinolone for which these side effects have not been described. We report a case of diffuse weakness due to a demyelinating polyneuropathy that began after initiation of trovafloxacin in a patient without an underlying neurologic disorder.