<unk>  is a condition characterized by abnormal electrical pathways in the heart that cause a disruption of the heart's normal rhythm (arrhythmia). The condition can lead to episodes of tachycardia.<unk>  is one of the most common causes of fast heart rate disorders in infants and children.
Wolff-Parkinson-White syndrome
West syndrome
Wright dick syndrome
Pallister–Killian syndrome
Wernicke-Korsakoff syndrome
Shy-Drager syndrome
Cohen syndrome
Ohtahara syndrome