![]() HHT (also called Osler-Weber-Rendu syndrome): an inherited disorder of the blood vessels in skin and internal organs that can cause excessive bleeding.Diseases associated with telangiectasia include: In some cases, doctors may want to make sure that there is no underlying disorder. Telangiectasia is easily visible from the threadlike red lines or patterns it creates on the skin. People with HHT receive either one normal gene and one mutated gene or two mutated genes (it only takes one mutated gene to cause HHT).ĭoctors may rely on the clinical signs of the disease. Five genes are suspected to cause HHT, and three are known. People with HHT inherit the disease from at least one parent. The causes of hereditary hemorrhagic telangiectasia are genetic. systemic lupus erythematosus: can increase skin sensitivity to sunlight and extreme temperatures.dermatomyositis: inflames skin and underlying muscle tissue.scleroderma: hardens and contracts the skin.habitual corticosteroid use: thins and weakens the skin.rosacea: enlarges venules in the face, creating a flushed appearance in cheeks and nose.aging: aging blood vessels can begin to weaken.pregnancy: often applies large amounts of pressure on venules.alcoholism: can affect the flow of blood in vessels and can cause liver disease.This is because they usually appear on the body where skin is often exposed to sunlight and air. It’s believed that most cases of telangiectasia are caused by chronic exposure to the sun or extreme temperatures. These causes may be genetic, environmental, or a combination of both. Researchers believe several causes may contribute to the development of telangiectases. The exact cause of telangiectasia is unknown.
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