What causes acne on the chin and forehead?

Acne vulgaris is a chronic inflammatory disease of the hair follicles and sebaceous glands most commonly seen in dermatology. It occurs on the cheeks, forehead and chin, but may also affect the trunk, chest and back. Clinical manifestations are characterized by pimples, pustules, nodules, cysts and scars. It is also called acne because it occurs during puberty. The cause of acne on the chin and forehead is normally related to the secretion of androgen levels and increased sebaceous gland secretion, as well as frequent eating of spicy and irritating foods, and the use of glucocorticoid drugs and androgen drugs can induce acne.