Angiospazm - periodically coming narrowing of the small arteries and blood capillaries, which results in reduction of blood supply to the organ or tissue, which in turn causes the violation of tissue exchange. If this violation pronounced, felt pain, sometimes develops necrosis, or tissue degeneration. Angiospazm often has neurogenic origin. There angiospazm with hypertension, angina, asthma, migraines, and atherosclerosis, a disease Reynaud, endarteritis. Angiospazm may occur in result of cooling, painful stimuli, intoxication (alcohol, nicotine) and certain substances (adrenaline, noradrenaline, and others).

Angiospazm (from the Greek. angeion - vessel and spasmos - spasm) - decrease the clearance of small arteries, arterioles and capillaries in the tonic contraction of the muscles, leading to increased resistance to blood flow and reduction of blood supply to organs and tissues. Angiospazm has neurogenic origin, but it happens due to the action of humoral agents (adrenaline, noradrenaline, vasopressin, and so on). A. observed in healthy people when cooled, painful stimuli, the psychic experiences. A. is the basis of many serious illnesses (hypertension, angina, stroke, illness Reynaud and others).