[Eosinophilia myalgia syndrome in administration of L-tryptophan].

We present the case of a 35-year-old male patient with severe myalgia and arthralgia in combination with fatigue, nocturnal sweating, leucocytosis and eosinophilia after a history of two months treatment of sleep disturbances with L-tryptophane in a daily dose of 1500 mg. Four months after discontinuation of treatment symptoms are still present.