User:Mr. Ibrahem/Ischemia

Ischemia is a restriction of the blood supply to tissue resulting in a shortage of oxygen. Types include ischemic heart disease, stroke, peripheral vascular disease, and mesenteric ischemia. Symptoms depend on the area of the body affected. Onset may be gradual or sudden.

Gradual cases may occur due to atherosclerosis, fibromuscular dysplasia, vasculitis, or external pressure from a tumor. Sudden cases may occur due to a blot clot, vasospasm, or aortic dissection.

Efforts to prevent the condition include a healthy lifestyle. The first documented use of the term is from 1855. The term is from the Greek ischein meaning "to restrain" plus haima meaning "blood".