Anal itching and dampness are relatively common and in many cases are due to the effects of abnormal secretion of anal glands. Among them, the conditions that cause abnormal secretion of anal glands are divided into the following: 1. Because inflammation at the end of the rectum can stimulate mucosal edema, increased secretion of glands, distributed in the perianal skin, can produce this clinical symptom. 2. Lesions of the rectal mucosa, such as when rectal mucosal prolapse is more serious, can also affect the closure of the anus, causing increased secretion of glands. 3. More serious hemorrhoids themselves secrete glands 4, due to occupying lesions around the rectum, including benign polyps as well as malignant rectal cancer, etc. 5, in addition to the cause of abnormal secretion of anal glands, local parasites directly cause local skin itching, and worms can be detected by the naked eye.