In daily life, itching is not uncommon. Mosquito bites, dry weather, skin allergies, and certain skin diseases can all cause itching. However, it would be wrong to think that itching is just a skin problem. . Many diseases hidden in the body can also cause itching, so if these three itches appear on the body, it may be a sign of disease, so don't worry.

1. Itching of limbs

High blood sugar is often not easy to detect, but on the one hand, high blood sugar causes polyuria symptoms, which can easily dehydrate and dry the skin. On the other hand, skin tissue contains Increased sugar levels are prone to bacterial and fungal infections, and diabetic neuropathy can also cause skin itching. Since this often occurs in the distal skin, if you experience repeated itching in your limbs, you need to be alert to whether you have diabetes.

2. Perianal itching

The anus is contaminated by feces and is also a place full of bacteria. If you do not pay attention to keeping the anus clean in daily life, secondary bacterial infection may easily occur, causing anal infection. Itching around the body. However, perianal itching can also be caused by other diseases, such as hemorrhoids and enteritis. Since cancerous tissues secrete a variety of active substances such as histamine, antigens, proteins, etc., which can cause immune responses in adjacent tissues, perianal itching may even be malignant. Tumors are precursors to rectal or sigmoid colon cancer.

3. Vulvar itching

The vulva is the most prone to itching. Both men and women will experience vulvar itching. Because the vulva is not exposed to the outside every day, and urine can easily contaminate the vulva and breed bacteria, or if A history of unclean sexual intercourse may lead to the occurrence of some infectious or sexually transmitted diseases, leading to vulvar itching, such as candida infection, mycoplasma and chlamydia infection, genital warts, genital herpes, etc. In addition, some malignant tumors in adjacent parts can cause some immune reactions or produce metabolites, which can also cause itching. Therefore, women with repeated vulvar itching need to be alert to gynecological malignant tumors, such as ovarian cancer, cervical cancer, etc.

In addition to the three itches above, lesions in certain organs in the body may also cause itching all over the body. For example, when itching of the skin all over the body is accompanied by pain in the liver area and jaundice, you need to be alert to the possibility of hepatobiliary system disease. It may be a precursor to liver cirrhosis; in chronic nephritis, uremia or renal failure, widespread skin itching is an important clinical manifestation, and the incidence rate can be as high as 86%. At this time, it is also accompanied by oliguria, anuria or proteinuria. Blood disorders such as polycythemia vera can also cause itching throughout the body. Therefore, do not underestimate skin itching in your daily life. It may be a disease signal sent by your body to you. It is recommended to go to the hospital in time.