The acne on both sides of the jaw is considered to be folliculitis, acne, rosacea and so on. 1. Folliculitis: Most folliculitis is caused by bacterial infection. Under normal circumstances, there will be a certain amount of bacteria on the surface of the skin, and when the skin is broken, the bacteria will enter the skin and infect the hair follicles causing follicular inflammation, which is mainly manifested as a red pimple centered on the hair follicle. 2. Acne: The occurrence of acne is related to the increase of androgen level and sebum secretion. After puberty, the abnormally high level of androgen will lead to a large amount of sebum secretion, and if it cannot be discharged in time, it will lead to the excessive proliferation of Propionibacterium acnes and cause acne. 3. Rosacea: The pathogenesis of rosacea is not particularly clear, it is considered to be a chronic inflammation caused by abnormalities in the skin’s immune and vasoconstrictor functions. If it is a papulopustular type of rosacea, there will be pinpoint to mung-bean sized papules on the basis of erythema. There may also be other causes of acne on both sides of the jaw, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.