Acne is the medical term for acne, and forehead temple acne is usually caused by high androgen levels, abnormal follicular keratinization, and Propionibacterium acnes infection. 1. Excessive secretion of androgens: Acne on forehead temples is considered to be caused by abnormal hormone levels, especially increased secretion of androgens, during adolescent development; in addition, hormone levels change before menstruation or during pregnancy, androgens increase in the body, which can lead to the enlargement of sebaceous glands and an increase in sebum secretion, which can cause acne. 2. Abnormal follicular keratinization: In addition, if the skin in the forehead and temple area is often exposed to greasy or oily substances and sweats more, it can lead to abnormal keratinization of the surrounding cells, causing the follicle opening to become smaller and narrower, blocking the follicle opening, and preventing sebum from being discharged, thus resulting in the formation of acne. 3. Propionibacterium acnes infection: The presence of Propionibacterium acnes reproduces and grows in large quantities in the skin of the forehead temple area, destroying the tissues around the hair follicles, leading to the spread of inflammation and inducing acne. It is recommended that patients go to the hospital in time and under the guidance of the doctor to carry out reasonable treatment.