What causes acne on both sides of the forehead?

Both sides of the forehead show acne, or will be affected by androgens, androgen secretion more or local hair follicle sensitivity to androgens increased, will cause sebaceous gland secretion of more oil. Oil easy to block hair follicle mouth, resulting in abnormal hair follicle cells keratinization. At the same time, if combined with Corynebacterium acnes infection, will show acne. Inflammatory acne, mainly manifested as red papules, pustules, nodules and even cysts. For mild symptoms, topical medications such as fusidic acid, benzoyl peroxide gel, and vitamin A cream are effective. However, for severe recurrent symptoms, oral medications can be used.