Acne scars are caused by inflammation within the dermal layer of skin and are estimated to affect 95% of people with acne vulgaris. The scar is created by abnormal healing following this dermal inflammation. Scarring is most likely to take place with severe acne, but may occur with any form of acne vulgaris. Acne scars are classified based on whether the abnormal healing response following dermal inflammation leads to excess collagen deposition or loss at the site of the acne lesion.
Retinoids are medications which reduce inflammation, normalize the follicle cell life cycle, and reduce sebum production. They are structurally related to vitamin A. The retinoids appear to influence the cell life cycle in the follicle lining. This helps prevent the accumulation of skin cells within the hair follicle that can create a blockage. They are a first-line acne treatment, especially for people with dark-colored skin, and are known to lead to faster improvement of postinflammatory hyperpigmentation.
When whiteheads and blackheads become infected with bacteria, called Propionibacterium acnes, it leads to inflammatory acne. Regular bacteria is found in most whiteheads and blackheads, but P. acnes is attracted to the closed, oily environment. This bacteria makes acne more difficult to treat. The four different pimple types that characterize inflammatory acne are papules, pustules, nodules and cysts.
Atrophic acne scars have lost collagen from the healing response and are the most common type of acne scar (account for approximately 75% of all acne scars). They may be further classified as ice-pick scars, boxcar scars, and rolling scars. Ice-pick scars are narrow (less than 2 mm across), deep scars that extend into the dermis. Boxcar scars are round or ovoid indented scars with sharp borders and vary in size from 1.5–4 mm across. Rolling scars are wider than icepick and boxcar scars (4–5 mm across) and have a wave-like pattern of depth in the skin.
Acne isn’t just a problem for teens. According to studies, those pesky zits and pimples can pop up at any age. Whether it’s your diet, environment or stress that’s to blame, you don’t have to suffer helplessly. To get the skinny on acne, we talked to board-certified dermatologist Cynthia Bailey, M.D., president and CEO of Advanced Skin Care and Dermatology Physicians, Inc. and founder of DrBaileySkinCare.com. Here, she shares her best tips on how to choose the right acne cleanser for you, as well as how to use it to get the best results.
Acne treatment that you apply to the skin: Most acne treatments are applied to the skin. Your dermatologist may call this topical treatment. There are many topical acne treatments. Some topicals help kill the bacteria. Others work on reducing the oil. The topical medicine may contain a retinoid, prescription-strength benzoyl peroxide, antibiotic, or even salicylic acid. Your dermatologist will determine what you need.