Spider nevi spider angioma is what picture
The spiderMole pictures, spider angioma is what
Spider angioma is a special kind of blood capillary expansion.It appeared in the face, neck and chest more, also have other parts.Performance of diameter 2 mm to the center for the following round small hemangioma, round out many capillaries, and have branch, looks like a red spider on the skin.If use pencil tip pressure center, spider angioma disappear, because spider angioma direction from the center to the surrounding blood flow to the capillary branches, if pressure, blood flow to the center block, spider angioma disappeared due to ischemia.
Disease profile
Spider nevi (spider angioma) : the skin arteriole end branchedness vascular birthmark, which is formed by the expansion is shaped like a spider, known as the spider angioma.Spider angioma of hemangioma is common in a capillary tumor.
The liver is the regulation of sex hormone metabolism and inactivated organs, especially by the human body organ in the secretion of estrogen, must pass through the liver before activity weakened or disappeared.When liver lesions, of estrogen loss of inactivated, the result is accumulated a lot of estrogen in the body, the small arteries in the body caused by expansion.
Spider angioma is skin mucous membrane of small artery expansion as a result, appeared on the skin like a spider, outsiders such as pin cap, the head can be more than 1 cm in diameter, the center bulge slightly, such as erythema, cap with a pin to press the center, around the capillary fading, remove the pressure after the recovery, often appeared in the superior vena cava distribution area, such as before the hands, face and neck, chest and shoulders, etc.
Spider nevi is common in the acute and chronic hepatitis or cirrhosis, is also found in pregnancy women and healthy people.The incidence of spider angioma about 1% patients with acute hepatitis, chronic hepatitis can reach about 54%.The emergence of the spider angioma and liver function status in parallel, when liver meritorious service is deteriorating, spider angioma can increase rapidly;Liver result after improvement, the mole can be changed from reason bright red to dark brown, and disappeared.
Spider angioma is a special kind of blood capillary expansion.It appeared in the face, neck and chest more, also have other parts.Performance of diameter 2 mm to the center for the following round small hemangioma, round out many capillaries, and have branch, looks like a red spider on the skin.If use pencil tip pressure center, spider angioma disappear, because spider angioma direction from the center to the surrounding blood flow to the capillary branches, if pressure, blood flow to the center block, spider angioma disappeared due to ischemia.
How the spider angioma formed?Most scholars believe that is associated with estrogen metabolism, adolescent girls and women during pregnancy because of increased estrogen levels, there will be a spider nevi, this is a normal performance.If man or old woman suddenly appeared spider angioma should alert, because of cirrhosis, liver cancer and chronic hepatitis b patients with liver failure, because the liver inactivated estrogen ability is abate, estrogen levels increase, also can appear spider angioma.Therefore, it is said, spider angioma is liver failure warning light.
Spider nevi itself is no harm to human body, but if found spider nevi, should immediately to the hospital, check liver function and hepatic B to exceed, exclude malignant tumor, and various diseases lead to liver failure.
The reasons causing
Spider angioma is a common clinical signs of chronic liver disease, but a spider angioma reasons not liver disease, the following will introduce what is the causes of spider angioma, so all raise awareness.
Is the main reason of the spider angioma produce sex hormones metabolism disorder, and some scholars think the happening of the spider angioma is directly related to the body's estrogen levels, so people under clinical spider nevi are:
: 1. Normal especially adolescent girls, because the adolescent girl at the peak of his growth and development stage, there is a lot of estrogen in the body, so also can appear spider nevi, but this is normal physiology phenomenon, need not special treatment, along with the growth of the age, estrogen secretion gradually reduce, spider angioma will gradually disappear.
2. The pregnancy women: spider angioma is formed by estrogen is produced, and women during pregnancy androgens are relatively increased, so that part of itA pregnant womanSpider nevi also can appear on the skin, and occurs mostly inpregnancyAfter two to five months, but no special treatment, postpartum months can disappear by oneself.
3. Liver disease: the liver is the regulation of sex hormone metabolism and inactivated organs, especially by the human body organ in the secretion of estrogen, must pass through the liver before activity weakened or disappeared, so when the liver lesions, of estrogen inactivated ability to drop, the result is accumulated a lot of estrogen in the body, the small arteries in the body caused by expansion in order to induce the body appear the spider nevi, therefore said the liver disease is a common cause of formation of the spider angioma in acute and chronic hepatitis or cirrhosis is the most common.
In addition, rheumatoid arthritis, rheumatoid arthritis and lack of B vitamins in patients also can appear spider angioma.
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