A group of headaches felt to involve abnormal sensitivity of the blood vessels (arteries) in the brain to various triggers which results in rapid changes in the artery size due to spasm (constriction). Other arteries in the brain and scalp then open (dilate), and throbbing pain is perceived in the head. Migraine headaches are the most common type of vascular headache.
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- Vasculitis, allergic
A disease (also more commonly called the Churg-Straus syndrome) characterized by inflammation of the blood vessels in persons with a history of asthma or allergy. The symptoms of the Churg-Strauss syndrome include fatigue, weight loss, inflammation of the nasal passages, numbness, and weakness. The ultimate test for the diagnosis of Churg-Straus syndrome is a biopsy […]
A surgical procedure designed to make a man sterile by cutting or blocking both the right and left vas deferens, the tubes through which sperm pass into the ejaculate.
Narrowing of the blood vessels that results from contraction of the muscular walls of the vessels. The opposite of vasoconstriction is vasodilation.
- Vasodepressor syncope
The temporary loss of consciousness in a particular kind of situation. (Syncope is temporary loss of consciousness or, in plain English, fainting). The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating or defecating or coughing. The reaction also can be due to the emotional stress of fear or […]