The difference between acne and folliculitis is the different prevalent population, prevalent areas, lesion characteristics, etiology and so on. 1. The prevalence of different groups: acne is a common follicular sebaceous glands of chronic inflammatory diseases, mainly in adolescents. Folliculitis is a common inflammatory skin disease of hair follicles, which can occur at any age. 2. Different parts of the body: acne occurs on the face, forehead, chest, back and shoulders, etc. Folliculitis can occur anywhere on the body. Folliculitis can occur in any hair follicle part of the body, with head, face, neck, thighs, buttocks and armpits being the most common. 3. Different lesion characteristics: acne is characterized by pimples, papules, pustules, nodules and other polymorphic lesions on the face. Folliculitis is a red papule around the hair follicle, which can sometimes be pus-filled, itchy and painful. 4. Different causes: The causes of acne mainly include abnormal androgen levels, increased sebum secretion, hyperkeratosis of the follicular epithelium, and propagation of Propionibacterium acnes. Folliculitis is mainly caused by bacteria, fungi and other pathogens that cause hair follicle infections, but some of them may also be related to the body’s immune function, allergic reactions, mite parasites, scarring and so on. If you need medication for acne or folliculitis, you should be treated under the guidance of a medical professional, and should not treat the condition on your own, which may cause adverse consequences.