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acne

American  
[ak-nee] / ˈæk ni /

noun

Pathology.
  • acnes
    plural
  1. an inflammatory disease of the sebaceous glands, characterized by comedones and pimples, especially on the face, back, and chest, and, in severe cases, by cysts and nodules resulting in scarring.


acne British  
/ ˈæknɪ /

noun

  1. Also called: acne vulgaris. a chronic skin disease common in adolescence, involving inflammation of the sebaceous glands and characterized by pustules on the face, neck, and upper trunk See also rosacea

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

acne Scientific  
/ ăk′nē /
  1. An inflammatory disease of the skin in which the sebaceous glands become clogged and infected, often causing the formation of pimples, especially on the face. It is most common during adolescence, but also occurs in infants and adults.


Usage

What is acne? Acne is a skin condition in which the skin’s sebaceous glands become clogged, infected, and inflamed. A more technical name for it is acne vulgaris. Acne commonly results in pimples—small inflammations or swellings of the skin that may or may not be filled with pus. More severe cases of acne can result in cysts and nodules that can leave scars. Acne most commonly affects the face, neck, and back. It is most common among teens and preteens due to changes in body chemistry during the period of development known as puberty, but adults can also get acne. Example: My skin is naturally oily, so I have to buy a specific face wash to help keep my acne under control.

Other Word Forms

Derived Forms

Inflected Forms

Nouns


Etymology

Origin of acne

1820–30; < New Latin < Late Greek aknás, a manuscript error for akmás, accusative plural of akmḗ facial eruption, probably to be identified with Greek akmḗ acme


Explanation

Acne is a skin condition that causes pimples or even a red rash to pop up on your face and sometimes your back and shoulders. Teenagers are often affected by acne, which is a real bummer when you’re trying to flirt. When you have acne, your skin is red and pimpled. Acne shows up on the face because that’s where you have more sebaceous glands, which are glands that produce oils to protect and annoy mammals. Acne also shows up on backs and shoulders, but it can really pop up anywhere on your body. Teenagers often get acne, because those fun hormonal surges of puberty cause an uptick in oil production. Adults can get acne as well. Great.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Older adults and women in particular can experience hormonal acne that pops up along the jawline and chin, Aguh said.

From Los Angeles Times ● Oct. 13, 2026

Aguh said they are suited only for mild forms of acne; Fine said the patches have given some of her patients discoloration and she doesn’t recommend them.

From Los Angeles Times ● Oct. 13, 2026

Treatments for acne range from over-the-counter creams and lotions to prescription-strength medications.

From Los Angeles Times ● Oct. 13, 2026

Isotretinoin may be an option if those medicines don’t work, or for cases of severe cystic acne.

From Los Angeles Times ● Oct. 13, 2026

Most people had the sense not to share a dieting trick with an overweight person, but no one seemed to think it was wrong to share their acne remedies with me.

From "Americanized" by Sara Saedi

This explains why antibiotics failed me time and time again: They selected for the resistant and hypervirulent strains of C. acnes.

From Slate ● Feb. 22, 2025

To edit the genome of C. acnes, the research team led by Marc Güell has focused on improving DNA delivery to the cell, DNA stability inside the cell, and gene expression.

From Science Daily ● Jan. 9, 2024

The most commonly involved bacteria are Cutibacterium acnes, which live innocuously on skin cells but can grow out of control when the skin's oily sebum increases and boosts bacterial food supply.

From Scientific American ● Jun. 16, 2022

In particular, human sebaceous glands support the growth of the bacterium Propionibacterium acnes, which uses oil from the glands for food.

From Textbooks ● Jun. 9, 2022

It is now generally acknowledged that the cause of this disease is the organism known as bacillus acnes.

From The Project Gutenberg Encyclopedia Volume 1 of 28 by Project Gutenberg

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