Cough syncope induced by gastroesophageal reflux disease.

A 52-year-old Japanese man was admitted to our hospital for evaluation of syncope and convulsions. An electrocardiogram on admission revealed normal sinus rhythm. However, after repeated bouts of coughing, the heart rate showed bradycardia associated with convulsion. He was diagnosed with cough syncope secondary to laryngopharyngitis, which was caused by gastroesophageal reflux disease (GERD). Once the patient was administrated lansoprazole (Takeda Pharmaceutical Co., Osaka, Japan) for GERD, the syncope disappeared. The causes of syncope are diverse and may manifest in disorders of different organ systems in the body. Therefore, clinicians should perform a careful whole body examination to obtain the correct diagnosis.