coronary vasospasm Prinzmetal angina https://www.malacards.org/card/prinzmetal_angina Potentially caused by mutations in smooth muscle K+ channel.nA syndrome typically consisting of angina (cardiac chest pain) at rest that occurs in cycles. It is caused by vasospasm, a narrowing of the coronary arteries caused by contraction of the smooth muscle tissue in the vessel walls rather than directly by atherosclerosis (buildup of fatty plaque and hardening of the arteries). angina inversa icd11.foundation:563516749 MONDO:0006021 GARD:0007465 DOID:0111151 MEDGEN:295 MESH:D000788 UMLS:C0002963 SCTID:87343002 ICD9:413.1 Wikipedia:Prinzmetal's_angina A syndrome typically consisting of angina (cardiac chest pain) at rest that occurs in cycles. It is caused by vasospasm, a narrowing of the coronary arteries caused by contraction of the smooth muscle tissue in the vessel walls rather than directly by atherosclerosis (buildup of fatty plaque and hardening of the arteries). For a portion of patients Prinzmetal's angina may be a manifestation of vasospastic disorder and is associated with migraine, Raynaud's phenomenon or aspirin-induced asthma. variant angina EFO:1000013