What causes acne on the back and face?

Acne on the back and face can be caused by folliculitis, skin allergies, acne, etc. and should be analyzed according to the symptoms.
1. Folliculitis: There are hair follicles on the face and back, if the follicles are invaded by bacteria or germs, it may lead to inflammation of the follicles. The formation of raised red bumps, at the top of the red bumps, there will be yellowish-white pus spots, there will be hair through the center.
2. Skin allergy: If the skin on the face and back comes into contact with some kind of allergic substances, such as pollen, animal hair, paint and so on, it will lead to allergic reaction of the skin, and the typical symptom is skin erythema and papules accompanied by itching and so on.
3. Acne: It is a chronic inflammatory skin disease of the follicular sebaceous gland units, with lesions occurring on the cheeks and forehead, followed by the chest, back and shoulders, mostly symmetrically distributed, often accompanied by enlarged pores and seborrhea. The various types of lesions include acne at the mouth of hair follicles, inflammatory papules and pustules as well as nodules, cysts and scarring.
The causes of acne on the back and face are many, and it is recommended that patients seek timely medical treatment, systematic examination and diagnosis, and standardized treatment in accordance with the doctor’s instructions.