Acne is actually the appearance of pimples or acne, a very common disease of the follicular sebaceous gland infection in adolescents. The causes are manifold: first, infection of the follicular sebaceous glands, such as Propionibacterium acnes infection; second, blockage of the follicular sebaceous ducts, resulting in the normal discharge of sebum; third, the involvement of inflammatory factors in the body; fourth, some endocrine factors, such as androgens, genetics, daily diet such as like to eat spicy, stimulating, fried, greasy food, can lead to the appearance of acne.