The efficacy and duration of treatment with propranolol in children with cyclic vomiting syndrome in southern Iran.

Introduction: Cyclic vomiting syndrome is a functional disorder characterised by repeated episodes of nausea and vomiting with symptom-free intervals between the attacks. Cyclic vomiting syndrome is a migraine equivalent; therefore, anti-migraine medications are effective for cyclic vomiting syndrome prophylaxis, but duration of treatment is not clear.

Aim: To determine the efficacy and duration of drug therapy in cyclic vomiting syndrome.