Rosacea, also known as rose acne, is a chronic inflammatory skin disease, which mainly occurs in erythema and telangiectasia in the center of the face. More common in middle-aged people aged 30 to 50, more common in women.

The reason is not clear. It may be that on the basis of sebum overflow, due to various harmful factors inside and outside the body, the blood vessels in the affected area are dysfunctional and the capillaries dilate for a long time. Follicle and local recurrent infection are important factors of this disease. Alcoholism, smoking, stimulating diet, digestive tract dysfunction, endocrine dysfunction (especially menopause), mental factors, focal infection, long-term cold and heat factors such as high temperature operation, sun exposure and wind-cold attack can all induce and aggravate this disease.