Acne on the front and back of the chest is a chronic inflammatory skin disease of the sebaceous gland unit, which occurs in adolescents. This is because teenagers have high sebum secretion, high activity and sweating. The common reasons are the following: 1, sweating more: due to the hot weather, patients sweat more, sweat and clothes stick to the front chest and back, resulting in pore blockage, breeding bacteria, and then the front chest and back acne; 2, dietary stimulation: patients long-term dietary irregularities, and like to eat spicy stimulating food, which leads to the front chest and back acne; 3, personal hygiene: usually do not pay attention to personal hygiene The first thing you need to do is to take a shower and change your clothes, which leads to the growth of bacteria in the front and back, and then acne; 4, endocrine disorders: due to various reasons leading to endocrine disorders in the body, androgens increase the secretion of sebaceous glands, which leads to acne in the front and back. The main treatment principle for front and back acne is to remove oil, dissolve keratin, sterilization, anti-inflammatory and regulation of hormone levels, the specific treatment is as follows: 1, clean: use water or suitable cleaning products to remove excess oil, dander and bacterial mixture on the skin surface of the front and back. But not overly clean, pay attention to oil control and moisturizing. Ointment, etc.