<unk>  is a condition that causes a disruption of the heart's normal rhythm. Specifically, this disorder can lead to uncoordinated electrical activity in the heart's lower chambers (ventricles), an abnormality called ventricular arrhythmia. If untreated, the irregular heartbeats can cause fainting (syncope), seizures, difficulty breathing, or sudden death. These complications typically occur when an affected person is resting or asleep.
Brugada syndrome
Woodhouse-Sakati syndrome
Prinzmetal's angina
Long QT syndrome
Aicardi syndrome
Siccardi syndrome
Morvan's syndrome
Long QT Syndrome