People with<unk>  are usually asymptomatic when not having a fast heart rate. However, individuals may experience palpitations, dizziness, shortness of breath, or infrequently syncope (fainting or near fainting) during episodes of supraventricular tachycardia.<unk>  is also associated with a very small risk of sudden death due to more dangerous heart rhythm disturbances.
Wolff–Parkinson–White syndrome
Lown–Ganong–Levine syndrome
Catel–Manzke syndrome
Parkinson-plus syndrome
De Barsy syndrome
Dravet syndrome
Benedikt syndrome
Stratton Parker syndrome