There are many reasons for acne on both sides of the chin, such as acne, folliculitis, viral warts, eczema and other causes. 1. Acne: the body androgen secretion, sebaceous glands hypersecretion, follicle duct hyperkeratosis, as well as Propionibacterium acnes reproduction are triggering factors, easy to cause both sides of the chin pimples. 2. Folliculitis: Inflammatory reactions caused by secondary bacterial infections in the hair follicles on both sides of the chin can also cause acne on both sides of the chin. 3. Viral warts: flat warts, common warts and other viral warts caused by human papilloma virus infection can cause benign skin abnormalities, which may also lead to pimples on both sides of the chin. 4. eczema: internal and external factors stimulate the skin inflammatory reaction, may also lead to the two sides of the chin pimples, most of the accompanied by itching, the acute stage will have a clear tendency to ooze. There may be other reasons for acne on both sides of the chin, you need to go to the hospital to check the cause of the disease, follow the doctor’s instructions for treatment.