Numerous methods are recommended to avoid attacks of<unk> . Afflicted individuals should not smoke tobacco products. Smoke cessation significantly reduces the incidence of patient-reported<unk>  attacks. They should also avoid any trigger known to them to trigger these attacks such as emotional distress, hyperventilation, unnecessary exposure to cold, and early morning exertion. And, they should avoid any of the recreational and therapeutic drugs listed in the above Signs and symptoms and risk factors sections as well as blockers of beta receptors such as propranolol which may theoretically worsen<unk> sospasm by inhibiting beta-2 adrenergic receptor's<unk> sodilation effect mediated by these receptors' naturally occurring stimulator i.e. epinephrine. In addition, aspirin should be used with caution and at low doses since at high doses it inhibits the production of the naturally occurring<unk> sodilator, prostacyclin.
Variant angina
Microvascular angina
Unstable angina
Coronary steal
Bundle branch block
Atopy
Palisade 
Renal angina