Paroxysmal tachycardia with episodic unconsciousness.
D002648:Child; D006801:Humans; D007223:Infant; D013610:Tachycardia; D013614:Tachycardia, Paroxysmal; D014474:Unconsciousness
TACHYCARDIA, PAROXYSMAL/in infancy and childhood; UNCONSCIOUSNESS/in infancy and childhood