The neck, as we call it, is often referred to as the nape of the neck, which is an area of the body where the sebaceous glands are densely distributed in the trunk. Due to acne, which is usually called sebaceous adenitis, the sebaceous glands may increase under the stimulation of sex hormones during puberty, and the sebum may block the sebaceous gland ducts, causing sebum retention, and even bacterial infections. Even irregular lifestyle, such as staying up late for a long time, lack of exercise, and even unhealthy diet and over-eating of greasy food, may lead to the occurrence of acne. The first recommendation for the occurrence of acne is: firstly, close observation; secondly, surgical treatment is recommended for complete eradication.