I don’t understand how small bumps can grow around the eyes for no reason, without pain or itching, and grow slowly, without any change for months or years. A careful patient may seek a doctor to confirm the diagnosis and find out what it is? What is the cause? How to treat it, etc. This is in fact a sweat duct tumor that plagues many patients. A. What is sweat duct tumor? Sweat duct tumor is an adenoma of the small sweat ducts within the epidermis. Histochemical studies have proven that sweat duct tumor contains phosphatase and hydrolase typical of the origin of small sweat glands and is a benign tumor of the sweat gland that differentiates towards the terminal sweat duct. Patients are mostly women (some men), and the rash often increases in women during pregnancy, premenstruation, or with the use of female hormones. Some patients have a family history of the disease, which is inherited in an autosomal dominant manner. The lesions occur on the face, especially on the eyelids and cheeks, and are characterized by hard, tough papules. It rarely resolves on its own, but is not malignant and may be left untreated. In addition to the lower eyelids and cheeks, sweat duct tumors can sometimes appear on other parts of the body. Common sites include the side of the neck, the chest, especially the upper forehead, and, less commonly, the waist, back, upper arms, thighs, and genitals. Normally, sweat duct tumors are not painful or uncomfortable. However, if the patient is in a hot environment, sweating or in the sun, he or she may have a burning or itching sensation. How are sweat duct tumors formed? Western medicine believes that sweat duct tumor is a kind of nevus-like tumor of human epidermal small sweat ducts caused by fat metabolism disorder, which is related to endocrine, pregnancy, menstruation and family genetic factors. Microscopic signs of sweat ducts can be seen in the upper dermis, where most of the sweat ducts are buried in the fibrous stroma and the ducts are lined with two layers of epithelial cells, and the lumen contains amorphous fragments. The majority of the superfluous organisms on the skin are attributed to the skin coup pores are not dense, wind-heat evil toxins invade the skin, or the body’s qi deficiency and blood dryness, essence does not glory, the accumulation of skin generated papules and the onset. The treatment of sweat duct tumor is a benign tumor of the small sweat ducts of the skin, which can be treated without treatment. If from the cosmetic point of view, it can be treated with carbon dioxide laser. During treatment, the tumor should be completely removed. The removed tumor, which will not recur, cannot prevent new rashes from appearing in other areas. Sweat duct tumors are damage to the dermis and are located deeper, but because they are small, usually no more than 3 mm in diameter, they usually do not leave scars after treatment. For generalized sweat duct tumors, there is a suggestion to try retinoic acid treatment, but the efficacy is not exact. The causes of sweat duct tumors are quite complex, including genetics, natural aging, female hormones, and personal constitution. Therefore, no matter how much skin care is done, the formation of sweat duct tumors is completely unpreventable. In this case, it is most important to seek the correct treatment and never squeeze the skin forcefully or use unclean needles to try to open it, as this may cause skin infection.