Is it seriously red? It could be a spider mole. I suggest you check it out.
Spider nevus is a special kind of telangiectasia. Most of them are found in the face, neck and chest, and also in other parts. It is characterized by a small circular hemangioma with a diameter less than 2mm in the center, and many capillaries around it extend and branch, which looks like a red spider lying on the skin. If you press the center with a pencil tip, the spider nevus will disappear, because the blood flow direction of the spider nevus is from the center point to the surrounding capillaries. If you press the center, the blood flow will be blocked and the spider nevus will disappear due to ischemia.
How is spider nevus formed? Most scholars believe that it is related to estrogen metabolism. Adolescent girls and pregnant women will have spider nevus because of the increased estrogen content, which is a normal performance. If men or elderly women suddenly appear spider nevus, they should be alert, because patients with liver cirrhosis, liver cancer and chronic hepatitis complicated with liver failure will also appear spider nevus, because the ability of liver to inactivate estrogen is weakened and the estrogen content is increased accordingly. So some people say that spider nevus is a warning light for liver failure.
A friend happened to find two little red dot on his neck, which was neither painful nor itchy. When you press it with your hand, it fades, when you release it, it turns red, and it spreads radially from the center to the surrounding. She is 32 years old, married for 8 years, and just 3 months pregnant for the first time. I'm afraid she is ill. After examining her, I told her that her two little red dot's were called spider nevus, which was caused by the increase of estrogen concentration in blood and the dilation of arterial capillaries. Estrogen is a sex hormone secreted by the ovary, but both male and female adrenal glands can produce some estrogen. Estrogen metabolism is carried out in the liver. When liver function declines, the inactivation of estrogen decreases, and the concentration of estrogen in blood increases, which leads to the dilation of arterial capillaries.
Spider nevus is mostly distributed in the superior vena cava area, and it is rare in the area below the costal arch. The most common parts are: neck, chest, back, face, forearm and back of hand, and nasal, pharyngeal and oral mucosa are rare. Disappeared during hemorrhage and shock, and disappeared after death. Palm liver is characterized by mottled red at thenar, thenar and fingertips of palm. Spider nevus is also found in normal pregnant women, which mostly occurs within 2-5 months of pregnancy and disappears within 2 months after delivery. Occasionally found in normal people and rheumatism, rheumatoid arthritis, vitamin B deficiency, xeroderma pigmentosum, chronic radiation dermatitis, lupus erythematosus, hemochromatosis and Raynaud's disease. Therefore, the appearance of a few spider nevus can not only be regarded as a sign of liver disease, but also must be considered in combination with clinical practice. Therefore, this patient's spider nevus is caused by the increase of estrogen concentration in the blood due to pregnancy, which is a normal phenomenon and will naturally disappear 2 months after delivery. She was relieved after listening to my words.
It is reported that 85% of men with spider nevus have lesions, and 30% of them are cirrhosis. At the same time, it is generally believed that the appearance, development and regression of spider nevus are often closely related to the improvement and deterioration of liver lesions. Therefore, spider nevus still has high reference value in the diagnosis of liver disease, but we should pay attention to exclude other possibilities. Generally speaking, it is of great reference value for the diagnosis of anal diseases when the following conditions are met: 1, with a large number and typical morphology; Or intermittent but persistent for a long time; 2. The original old spider moles suddenly increased obviously, and new ones appeared at the same time. If spider nevus is typical and exists for a long time, we should consider the possibility caused by chronic liver disease, which is common in cirrhosis and chronic hepatitis, but it can also appear temporarily in the course of acute and persistent hepatitis. Primary and secondary liver cancer can also appear. Finally, it should be pointed out that spider nevus should be differentiated from vascular nevus. Vascular nevus is a small red nevus with no radial small blood vessels, which does not fade when pressed. Its size and quantity often increase with age, which is more common in chest and abdomen skin.
Dr. Wu's answer: First of all, we must confirm whether it is a spider nevus, and then we must rule out that it is caused by visceral diseases, such as chronic inflammation of the liver. If there is no such disease, it can be treated with laser. However, if the spider nevus is larger, it means that the dilated blood vessels are thicker and the probability of recurrence is higher. If you fail once, you can do it again, and after many times, you can be completely eliminated.
Several, dozens or even hundreds of red spots often appear on the face, neck, upper limbs, chest and back of patients with chronic hepatitis and liver cirrhosis, and there are tiny branches around them, which look like little red spiders, so it is called spider nevus land. Press the center of the spider nevus with a pin or match to make it disappear, and then stop pressing and it will reappear. The appearance of spider nevus is related to estrogen in the body. When the liver function of chronic hepatitis or liver cirrhosis is damaged, the inactivation of estrogen in the liver is reduced, and the estrogen in the body is relatively increased, causing arterial telangiectasia. With the reduction or aggravation of hepatitis, this spider nevus will gradually disappear or aggravate.
Although the appearance of spider nevus can be regarded as one of the signs of chronic hepatitis or cirrhosis to some extent, spider nevus is not unique to hepatitis and cirrhosis. Many diseases that can cause peripheral arteriole dilatation may also lead to spider diseases, such as rheumatoid arthritis and malnutrition. People who drink for a long time, even normal people, can find it by accident. It is not uncommon for women to find spider nevus during menstruation or pregnancy, but this spider nevus is often atypical. Therefore, there is no need to make a fuss when you see a spider mole.