Pimples on the face and body are medically referred to as acne, which may be caused by puberty, clogged pores, inflammation and other reasons. 1. Puberty: If the patient is in puberty, the secretion of exuberant androgen enhances the functional activity of sebaceous glands, and the oil mixed with the shedding of dead skin cells clogs the pores, resulting in the formation of pimples and acne. 2. Pore blockage: When the cells around the hair follicles are abnormal keratinization, it can lead to narrowing, narrowing and blockage of the follicle opening, sebum can not be discharged normally, and it accumulates in the follicle opening to form acne and pimples. 3. Inflammation: Due to the increase of sebaceous gland secretion during puberty, its composition is suitable for the survival of some Propionibacterium acnes, and then Propionibacterium acnes infection occurs. Due to the stimulation of inflammation, acne can appear. It is recommended that patients with acne go to the hospital in time and follow the doctor’s instructions for standardized treatment to avoid delaying their condition.