Acne on both sides of the forehead may be caused by acne, flat warts, seborrheic keratosis or seborrheic dermatitis, folliculitis and other causes.
1. Acne: Acne occurs in teenagers and is related to abnormal androgen levels, increased sebum secretion and clogged pores caused by various reasons (such as irregular work and rest, spicy diet, etc.). It is characterized by blackheads, closed mouths, red pimples, pustules and so on.
2. flat warts: flat warts are flat papules of the same color as the skin or brown, caused by human papillomavirus (HPV virus) infection of the skin, which can be inoculated through scratching and other ways, thus appearing in various parts of the body.
3. Seborrheic keratosis: Seborrheic keratosis is common among middle-aged and old people, which is related to long-term exposure to ultraviolet rays. It is characterized by brown or black flat papules with a rough surface.
4. Seborrheic dermatitis: seborrheic dermatitis mainly occurs in the face, can be manifested as erythematous papules accompanied by greasy scales, the cause of the disease is not clear, may be related to age, gender.
5. Folliculitis: Folliculitis is mostly caused by fungal or bacterial infections due to lack of attention to hygiene or local injuries, and may occur in any part of the hair follicles, with red follicular inflammatory pimples with pain at the site of onset.
If the problem of acne on both sides of the forehead occurs, it is recommended to go to a regular hospital to clarify the cause of the disease and actively treat it.