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Concept
Pimple
Summary
A pimple or zit is a kind of comedo that results from excess sebum and dead skin cells getting trapped in the pores of the skin. In its aggravated state, it may evolve into a pustule or papule. Pimples can be treated by acne medications, antibiotics, and anti-inflammatories prescribed by a physician, or various over the counter remedies purchased at a pharmacy.
Sebaceous glands inside the pore of the skin produce sebum. When the outer layers of skin shed (a natural and continuous process, normally), dead skin and oily sebum left behind may bond together and form a blockage of the sebaceous gland at the base of the skin. This is most common when the skin becomes thicker at puberty. The sebaceous gland continues to produce sebum, which builds up behind the blockage, allowing bacteria to grow in the area, including the species Staphylococcus aureus and Cutibacterium acnes, which causes inflammation and infection. Other causes of pimples include family history, stress, fluctuations in hormone levels, hair and skincare products, medication side effects, and un-diagnosed or underlying medical conditions. Pimples can be part of the presentation of rosacea.
The American Academy of Dermatology recommends that adults with acne use products labeled as "non-comedogenic", "non-acnegenic", "oil-free" or "won’t clog pores", as they are "least likely" to cause skin irritation or acne.
File:Blackheads.JPG|[[Sebaceous filament]]s are commonly mistaken for [[Comedo|blackheads]]. However, they are completely harmless and are a natural part of the skin for people with oily skin.{{cite book |last1=Plewig |first1=Gerd |last2=Melnik |first2=Bodo |last3=WenChieh |first3=Chen |title=Plewig and Kligman's Acne and Rosacea |publisher=Springer |isbn=978-3-319-49274-2 |page=64|date=8 June 2019 }}
File:AcneVulgarisUSMIL.jpg|Some more severe pimples can lead to significant swelling and may appear on the back and chest.
Acne vulgaris#Management
Common over-the-counter medications for pimples are benzoyl peroxide, salicylic acid, adapalene, and antibacterial agents such as triclosan.
Official source
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