OBJECTIVE: To describe a case of movement disorder associated with cisapride use. METHOD: Case report.RESULTS: This is the case of a male eight months old child who began to use cisapride, 0,2 mg/kg tid to treat gastroesophageal reflux disease. One month after beginning with the drug, he started to present repetitive movements of the hands characterized by opening and closing hands with flexion and extension of the wrists. According to the mother, these movements became more evident as the dose of the medication was increased, and, thereafter, started to happen also on the feet. When the child was six months old, time of the first neurological evaluation, he presented normal neurological development, except for the Parachute reflex, which was absent. After excluding metabolic, toxic and infectious diseases, the drug was withdrew. The child evolution was benign, with gradual disappearance of the movements, and he was completely normal 30 days after.CONCLUSIONS: The authors stress the need suspending the use of cisapride in any case of neurologic symptoms as seizures, somnolence, malaise or involuntary movements in previously normal patients.