IV beta blockers first line
Consider magnesium
Avoid epinephrine
Beta blockers, often nadalol
ICD if fail medications or presents with cardiac arrest
Flecainide
Verapamil
Left cardiac sympathetic denervation (!)
Avoid competitive sports and other stimulants
Catecholaminergic polymorphic ventricular tachycardia
Seizure
Idiopathic fascicular left ventricular tachycardia
Toxicologic exposure 
Wandering atrial pacemaker
CO poisoning 
Polymorphic ventricular tachycardia
Breath-holding spell