The eosinophilia-myalgia syndrome, the recently described disorder (1, 2) associated with the use of L-tryptophan, may present with neuritis, among other features. A history of L-tryptophan use should be sought in patients presenting with symptoms of this disorder, particularly those with anxiety, depression, or insomnia. We report the case of a patient in which the neuritis was a prominent aspect of the syndrome.
Case Report: A 48-year-old woman sought medical attention because of increasingly severe muscle aches. Six weeks before she was hospitalized, the patient had upper-back aches and soreness. The pain worsened, progressing to her shoulders, upper arms, thighs,