What causes closed mouth acne on the forehead and chin?

Forehead and chin acne is related to exuberant sebum secretion, sebaceous gland duct blockage, poor skin care, etc., and the appropriate treatment should be chosen according to the condition.
1. Endocrine factors: most common in adolescents, due to elevated levels of androgens in the body, resulting in sebaceous glands secrete oil, leading to the formation of acne.
2. Sebaceous gland duct blockage: Narrowing and narrowing of sebaceous gland ducts can lead to shedding of epithelial cells and sebum discharge obstruction, resulting in the formation of acne.
3. Poor skin care: Long-term use of oily skin care products, poor cleansing, frequent washing of the face, etc., resulting in damage to the skin barrier, pore clogging, leading to the formation of acne.
4. Poor lifestyle and diet: prolonged late nights, stress, high sugar and oily diet can lead to increased sebum secretion, triggering the formation of acne and aggravating the symptoms.
Patients with closed mouth acne on forehead and chin need to adjust their living and dietary habits, and seek medical advice and standardized treatment under the guidance of a doctor.