Why is the thenar of the left thenar a little dark?

When suffering from chronic hepatitis, especially liver cirrhosis, the thenar and thenar skin of thumb and little finger appear patchy congestion, or erythema and plaque, which becomes pale after compression. This kind of palm, which is different from normal people, is called liver palm. Most patients with liver cirrhosis are prone to liver palm.

Causes of hepatopalmar occurrence:

There are 1 slightly triangular glands above the kidneys of normal men and women, which are called adrenal glands. This gland constantly produces estrogen, which maintains a relatively balanced normal level with the androgen produced by the body, thus ensuring the normal physiological, biochemical and metabolic functions of the body in this respect. In addition, female ovaries also produce this hormone. Estrogen secreted by human sexual organs must pass through the liver to weaken its function or make its activity disappear.

However, when acute or chronic inflammation or other diseases occur in the liver, the ability to inactivate estrogen is obviously reduced, which leads to a large accumulation of estrogen in the body and the expansion of arterioles in the body. Spider nevus is the result of the dilation of arterioles on the skin and mucosa. Because the arterioles are like cobwebs after expansion, the network disappears immediately when you press the "spider body" with the tip of a pencil. This kind of mole is as small as a grain of rice, ranging from 2 ~ 3 cm to 1. More common in the chest, face, neck, upper limb back. The incidence of spider nevus in patients with acute hepatitis is about 65438 0%, while that in patients with chronic hepatitis is about 54%. The appearance of spider nevus is often parallel to the state of liver function. When liver function deteriorates, spider nevus can increase sharply. After the improvement of liver function, this kind of nevus can change from bright red to brownish black, and then disappear. The imbalance of estrogen inactivation can also cause telangiectasia in patients with hepatitis.

Not all liver palms have liver diseases. Many healthy people often have liver palm shape in clinic, but after years of observation, liver function has been normal and liver disease has never occurred. Therefore, for patients with hepatopalmar type, it is necessary to combine the medical history, physical examination, liver function, hepatitis B virus surface antigen, B-ultrasound and scanning to make a comprehensive analysis and judgment, so as to make a correct conclusion.