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Erythromelalgia, or Mitchell's disease (after Silas Weir Mitchell), is a rare vascular peripheral pain disorder in which blood vessels, usually in the lower extremities or hands, are episodically blocked (frequently on and off daily), then become hyperemic and inflamed.
Increased blood pressure in the veins (venous hypertension) can cause diffusion of substances, including fibrin, out of capillaries. Fibrotic tissue may predispose the tissue to ulceration. Recurrent ulceration and fat necrosis is associated with lipodermatosclerosis. In advanced lipodermatosclerosis the proximal leg swells from chronic venous ...
Yellowjacket sting in its sheath in the scanning electron microscope. Among arthropods, a sting or stinger is a sharp organ, often connected with a venom gland and adapted to inflict a wound by piercing, as with the caudal sting of a scorpion. Stings are usually located at the rear of the animal.
Treatment: As a precaution, people with sperm allergy are prescribed an epinephrine auto-injector (Epi-Pen) in the event of anaphylaxis, a life-threatening allergic reaction, Dr. Jacobson says ...
Varicose veins are veins that have become enlarged and twisted, especially within the legs, ankles and feet of an affected individual. [4] When standing, gravity pulls the blood downwards to the lower part of the body. Body mechanisms, such as vasoconstriction and valves of the veins, assist in pumping blood upwards. [5]
The small vessels in the skin affected are located in the superficial dermis and include arterioles (small arteries carrying blood to capillaries), capillaries, and venules (small veins receiving blood from capillaries). [5] In general, immune complexes deposit in vessel walls leading to activation of the complement system.
Internal cerebral veins. Basal vein; Great cerebral vein; Veins of brainstem; Cerebellar veins; Orbital veins Superior ophthalmic vein. Nasofrontal vein; Ethmoidal veins; Lacrimal vein; Vorticose veins; Ciliary veins; Central retinal vein; Episcleral vein; Inferior ophthalmic vein; Azygos vein. Posterior intercostal veins. Intervertebral vein ...
A vein disorder is a class of disease involving veins of the circulatory system. [1] Common vein disorders include: [citation needed] Varicose veins; Deep vein thrombosis; Superficial thrombophlebitis