Brugada syndrome is a genetic disease that results in abnormal EKG results and the possibility of sudden cardiac death. It is the primary cause of sudden unexpected death syndrome. It is the most common cause of sudden cardiac death in the young in Thailand and Laos. At present, over 160 different genetic variations can result in the condition. A defective gene leads to an abnormal growth on the right ventrical. This can result in a sudden onset of ventricular tachycardia in a patient with no previous heart problems.