Many people think that acne is a simple disease, just pimples, easy to diagnose and can be treated without treatment. But this disease is not that simple. Have you diagnosed it correctly? Do you really not need treatment? Let’s take a look at the classification of acne that I have compiled! 1, common acne: lesions are commonly found on the cheeks, forehead, cheeks and nose and cheeks, followed by the chest, back and shoulders, lesions can be papules, pimples, inflammatory papules, pustules, etc., often with one or two types of damage, the disease generally has no conscious symptoms, inflammation can be painful. Acne is one type of this acne. 2, papular acne: can also be called acne, lesions are mainly inflammatory papules, the center of the papule can have blackheads acne or translucent fat plugs. This includes small pimples, whiteheads, and blackheads. 3.Pustular acne: The lesions are mainly pustules and inflammatory papules. The pustules are mostly located at the top of the papules, and there is a sticky pus outflow after breaking down. 4.Hard nodular acne: When the inflammatory infiltration is deeper, pustular acne can develop into thick-walled nodules of varying sizes, dark red or purplish-red in color. It lasts for a long time and some are gradually absorbed, while others become pus-bursting and form scarring. 5. Cystic acne: In addition to the above rashes, deep inflammation can also form huge abscesses, some containing large blackheads and pimples, and containing blood-tinged jelly-like pus in the cysts, which later occur as obvious scarring, and some form keloids. 6.Atrophic acne: Papular or pustular damage destroys the glands and causes pit-like atrophic scarring. 7. Convergent acne: The most serious type of acne, including various types of damage, including acne, papules, pustules, cysts and fistulas that break down and flow pus, forming significant scarring or keloid scars after healing. Some of the damage occurs on the lower back, buttocks and femur. 8, necrotizing acne: also known as acne vulgaris-like acne, common in 20 to 50 years old, slightly more in men, accompanied by seborrhea. It occurs mainly on the forehead and the front edge of the scalp, but also on the cheeks, nose and trunk, where the lesions are maroon, clusters of perifollicular papules and brown pustules. The lesions are often umbilical concave and rapidly necrotic, accompanied by adhesive bleeding scabs, which fall off after 3 to 4 weeks leaving a scar, which forms a network after repeated attacks. 9, neonatal acne: mainly occurs within 3 months after birth, more males than females, often with a clear family history, probably related to genetics, lesions mainly occur in the cheeks, forehead and chin, blackheads, papules and pustules, occasionally see nodules and cysts, blackheads generally fade within a few weeks, papules and pustules can be healed within 6 months, leaving depressed scarring, adolescence can be recurring. Easily confused with infantile eczema. 10.Eruptive acne: caused by the immune response caused by Propionibacterium acnes or by the use of retinoic acid. Acute attacks, general discomfort, anemia, weight loss, muscle, bone and joint pain, and anorexia. The lesions are mostly cystic ulcers, painful inflammatory nodules and cysts, and acne-like eruptions can still be seen. 11, hyperandrogenic acne: refers to acne with polycystic ovary syndrome and premenstrual exacerbation or adult patients with late-onset or persistent acne. It is ineffective for general treatment and lasts until the age of 30 to 40. Symptoms include excessive sebum production on the face, rough skin, large pores, whiteheads and blackheads, predominantly inflammatory papules with nodules, cysts, breakouts, overflowing pus, and scarring, sometimes with hirsutism, androgenetic alopecia, and menstrual cycle disorders. Persistent flushing in the nasolabial folds and on both sides of the nose, and masculinization of the skin. 12.Medicated acne: It refers to acne-like lesions caused by androgens and glucocorticoids, etc. This type can also be called folliculitis. 13, Premenstrual acne: It develops or intensifies before menstruation, mainly on the jaw and cheeks, with a small number of lesions.