Acne is commonly known as acne, and the common clinical causes of chin acne are hormonal factors, medication factors, environmental factors, and lifestyle habits. 1. Hormonal factors: mainly related to the sebum secretion function of the body associated with elevated levels of androgens, clinical features such as pimples, papules, pustules, etc., most commonly seen in young men and women aged 15 to 25 years old. 2. Drug factors: For people who often apply androgens, glucocorticoids and drugs containing iodine and bromine, their sebum secretion function will be abnormal, which may cause acne. 3. Environmental factors: Some people regularly use cosmetics, hairspray, sunscreen, etc., which may cause blockage or narrowing of sebaceous gland ducts, thus triggering acne. 4. Lifestyle Habits: Habits such as staying up late, not cleaning the face thoroughly, and eating an unhealthy diet may cause the sebaceous glands of the hair follicles to secrete excessively or the ducts to become clogged, thus making acne easy to develop. If acne persists and does not improve, it is recommended to go to the dermatology department of a hospital for consultation and treatment.