For those of you who love acne, do you know anything about acne on your face? What type of acne is it, and how serious is it now? Different types and degrees of acne are not the same, and you must not use drugs blindly. 
What we commonly call acne, that is, acne, is a common chronic inflammatory disease of the sebaceous gland of hair follicles, which tends to occur in oily parts, such as the face, chest, and back, and is characterized by papules, pustules, nodules, cysts and scars, etc., and mostly occurs in adolescent men and women.
Acne grading is an important basis for the selection of acne ** regimen and the evaluation of efficacy, there are currently a variety of grading methods in the world, and the 2019 edition of the "Acne Diagnosis and Treatment Guidelines" mainly divides acne into acne according to the nature of skin lesions3rd degree, 4th grade
Mild grade only comedones
Moderate grade with inflammatory papules
Moderate grade pustules appear
Severe grade with nodular cysts
Closed comedones
Commonly known as "whitehead", it is a dome-shaped, non-inflammatory smooth papule with a diameter of <5mm, which is complex-colored, whitish or gray, and can pick and extrude white-yellow okara-like substances.
Open comedones
Commonly known as "blackheads", this is a non-inflammatory papule <5mm in diameter, with a dilated follicular orifice containing gray, brown, or black keratinizing substance.
Papules, pustules
Relatively superficial inflammatory papules and pustules, usually < 5 mm in diameter.
Nodules or cysts
There is a fluctuating sensation when squeezing, and if it does not heal for a long time, it can suppurate and form an abscess, and after it ruptures, it will form sinus tracts and scars.
Post-inflammatory hyperpigmentation
Acne can cause hyperpigmentation of active or regressing lesions, which usually resolve spontaneously in 3-6 months, but individual pigmented spots can last for months or longer without **.
Scarring
Common sequelae of acne include atrophic scars, hypertrophic scars, and keloids.
The symptoms of acne are different, and the pathogenesis is complex, including androgen-mediated stimulation of the sebaceous glands, microbiota imbalance of the sebaceous glands of the hair follicle, immune response, and can also be affected by genetics, diet, and other factors.
Therefore, acne patients must go to a regular hospital scientifically, and do not apply or take medicine casually, so as to avoid delaying the opportunity and leaving irreparable damage. Chongqing *** acne is the best