Several scales exist to grade the severity of acne vulgaris, but no single technique has been universally accepted as the diagnostic standard.[68][69] Cook's acne grading scale uses photographs to grade severity from 0 to 8 (0 being the least severe and 8 being the most severe). This scale was the first to use a standardized photographic protocol to assess acne severity; since its creation in 1979, the scale has undergone several revisions.[69] The Leeds acne grading technique counts acne lesions on the face, back, and chest and categorizes them as inflammatory or non-inflammatory. Leeds scores range from 0 (least severe) to 10 (most severe) though modified scales have a maximum score of 12.[69][70] The Pillsbury acne grading scale simply classifies the severity of the acne from grade 1 (least severe) to grade 4 (most severe).[68][71]
Antiandrogens such as cyproterone acetate and spironolactone have been used successfully to treat acne, especially in women with signs of excessive androgen production such as increased hairiness or skin production of sebum, or baldness.[10][47] Spironolactone is an effective treatment for acne in adult women, but unlike combined birth control pills, is not approved by the United States Food and Drug Administration for this purpose.[1][36][100] The medication is primarily used as an aldosterone antagonist and is thought to be a useful acne treatment due to its ability to additionally block the androgen receptor at higher doses.[36] Alone or in combination with a birth control pill, spironolactone has shown a 33 to 85% reduction in acne lesions in women.[91] The effectiveness of spironolactone for acne appears to be dose-dependent.[91] High-dose cyproterone acetate alone has been found to decrease symptoms of acne in women by 75 to 90% within 3 months.[101] It is usually combined with an estrogen to avoid menstrual irregularities and estrogen deficiency.[102] The medication has also been found to be effective in the treatment of acne in males, with one study finding that a high dosage reduced inflammatory acne lesions by 73%.[103][104] However, the side effects of cyproterone acetate in males, such as gynecomastia, sexual dysfunction, and decreased bone mineral density, make its use for acne in this sex impractical in most cases.[103][104][105] Hormonal therapies should not be used to treat acne during pregnancy or lactation as they have been associated with birth disorders such as hypospadias, and feminization of the male babies.[47] In addition, women who are sexually active and who can or may become pregnant should use an effective method of contraception to prevent pregnancy while taking an antiandrogen.[106] Antiandrogens are often combined with birth control pills for this reason, which can result in additive efficacy.[36][107]

The recognition and characterization of acne progressed in 1776 when Josef Plenck (an Austrian physician) published a book that proposed the novel concept of classifying skin diseases by their elementary (initial) lesions.[164] In 1808 the English dermatologist Robert Willan refined Plenck's work by providing the first detailed descriptions of several skin disorders using a morphologic terminology that remains in use today.[164] Thomas Bateman continued and expanded on Robert Willan's work as his student and provided the first descriptions and illustrations of acne accepted as accurate by modern dermatologists.[164] Erasmus Wilson, in 1842, was the first to make the distinction between acne vulgaris and rosacea.[165] The first professional medical monograph dedicated entirely to acne was written by Lucius Duncan Bulkley and published in New York in 1885.[166][167]


How to Handle It: Speaking of touching, don't! Picking it, squeezing it, or poking at it will only worsen the situation. These may disappear on their own after a few days. Otherwise, Zeichner suggests visiting your dermatologist for a shot of cortisone, which will reduce inflammation and shrink it in just 24 to 48 hours. But if a last-minute appointment isn't in the cards, play mad scientist. First, ice the area, and then apply salicylic acid gel, benzoyl peroxide gel, and 1 percent hydrocortisone cream. The combo will calm skin, kill bacteria, and draw out excess oil from the pimple — all things necessary to take this down, says Zeichner.

The main hormonal driver of oily sebum production in the skin is dihydrotestosterone.[1] Another androgenic hormone responsible for increased sebaceous gland activity is DHEA-S. Higher amounts of DHEA-S are secreted during adrenarche (a stage of puberty), and this leads to an increase in sebum production. In a sebum-rich skin environment, the naturally occurring and largely commensal skin bacterium C. acnes readily grows and can cause inflammation within and around the follicle due to activation of the innate immune system.[10] C. acnes triggers skin inflammation in acne by increasing the production of several pro-inflammatory chemical signals (such as IL-1α, IL-8, TNF-α, and LTB4); IL-1α is known to be essential to comedo formation.[45]


Inside your hair follicles, there are small glands producing oil called sebum. This oil mixes with skin cells in the follicle and joins them on the journey outward. But when there's too much sebum, too many dead skin cells or something on the surface that blocks their exit from the follicle, a blockage can occur. Bacteria joins the party, and the result is acne vulgaris, the most common form of acne.
Dermabrasion is an effective therapeutic procedure for reducing the appearance of superficial atrophic scars of the boxcar and rolling varieties.[32] Ice-pick scars do not respond well to treatment with dermabrasion due to their depth.[32] The procedure is painful and has many potential side effects such as skin sensitivity to sunlight, redness, and decreased pigmentation of the skin.[32] Dermabrasion has fallen out of favor with the introduction of laser resurfacing.[32] Unlike dermabrasion, there is no evidence that microdermabrasion is an effective treatment for acne.[8]
Your skin is your largest organ, and it does a lot more than simply prevent you from spilling out all over the place. Skin cells are constantly replacing themselves, making a journey from the inner edge of your epidermis (your skin's outermost layer) to the outside of your skin. As a skin cell ages and approaches the skin's surface, the dying cell flattens out. Once on the surface, it joins countless other dead skin cells and forms a protective layer that helps protect you from bacteria and viruses.
Decreased levels of retinoic acid in the skin may contribute to comedo formation. To address this deficiency, methods to increase the skin's production of retinoid acid are being explored.[10] A vaccine against inflammatory acne has shown promising results in mice and humans.[50][181] Some have voiced concerns about creating a vaccine designed to neutralize a stable community of normal skin bacteria that is known to protect the skin from colonization by more harmful microorganisms.[182]
Washing your face with regular soap isn't enough to make acne better. The best face wash for acne is effective at removing oil and dirt, but still gentle enough to use regularly without overdrying your skin. Look for topical acne medication ingredients salicylic acid and/or benzoyl peroxide in your face wash and use gentle, nonabrasive cleansing techniques.
The treatment regimen your doctor recommends depends on your age, the type and severity of your acne, and what you are willing to commit to. For example, you may need to wash and apply medications to the affected skin twice a day for several weeks. Often topical medications and drugs you take by mouth (oral medication) are used in combination. Pregnant women will not be able to use oral prescription medications for acne.
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