Acne
This factsheet is for people who have acne.
Acne is a skin condition that causes spots. Most people affected by acne are aged between 12 and 25.1 However, men and women in their 30s and 40s can also suffer. There are many treatments available to help deal with the condition.
What is acne?
Acne is a skin condition that typically causes one or more of the following:
* blackheads (comedones)
* whiteheads
* red or yellow spots
* greasy skin
* scars
Acne typically affects the skin of the face, back, neck, chest and arms and the severity of the condition can vary.
Acne affects people of all skin colours. The processes that cause acne are exactly the same in people with black or brown skin but the impact is altered by the skin pigmentation.
Acne is very common and affects about 80 in 100 people aged 11-30 at some time.
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Acne
This factsheet is for people who have acne.
Acne is a skin condition that causes spots. Most people affected by acne are aged between 12 and 25.1 However, men and women in their 30s and 40s can also suffer. There are many treatments available to help deal with the condition.
What is acne?
Acne is a skin condition that typically causes one or more of the following:
* blackheads (comedones) 2,3
* whiteheads2,3
* red or yellow spots2,3
* greasy skin2,3
* scars2,3
A detailed and comprehensive discussion of acne scars starts with causes of scarring, prevention of scarring, types of scars, and treatments for scars.
Before talking about scars, a word about spots that may look like scars but are not scars in the sense that a permanent change has occurred. Even though they are not true scars and disappear in time, they are visible and can cause embarrassment.
Macules or "pseudo-scars" are flat, red or reddish spots that are the final stage of most inflamed acne lesions. After an inflamed acne lesion flattens, a macule may remain to "mark the spot" for up to 6 months. When the macule eventually disappears, no trace of it will remain—unlike a scar.
Post-inflammatory pigmentation is discoloration of the skin at the site of a healed or healing inflamed acne lesion. It occurs more frequently in darker-skinned people, but occasionally is seen in people with white skin. Early treatment by a dermatologist may minimize the development of post-inflammatory pigmentation. Some post-inflammatory pigmentation may persist for up to 18 months, especially with excessive sun exposure. Chemical peeling may hasten the disappearance of post-inflammatory pigmentation.
Causes of Acne Scars
In the simplest terms, scars form at the site of an injury to tissue. They are the visible reminders of injury and tissue repair. In the case of acne, the injury is caused by the body’s inflammatory response to sebum, bacteria and dead cells in the plugged sebaceous follicle. Two types of true scars exist, as discussed later: (1) depressed areas such as ice-pick scars, and (2) raised thickened tissue such as keloids.
Acne is a very common disease. People who have it tend to have similar kinds of questions about it and its treatment. This section addresses some of the common questions asked by people with acne. Please remember that your dermatologist is always the best source of specific information about your individual health issues, including acne.
Questions and Answer does follows:
1. What causes acne?
The causes of acne are linked to the changes that take place as young people mature from childhood to adolescence (puberty). The hormones that cause physical maturation also cause the sebaceous (oil) glands of the skin to produce more sebum (oil). The hormones with the greatest effect on sebaceous glands are androgens (male hormones), which are present in females as well as males, but in higher amounts in males.
Sebaceous glands are found together with a hair shaft in a unit called a sebaceous follicle. During puberty, the cells of the skin that line the follicle begin to shed more rapidly. In people who develop acne, cells shed and stick together more so than in people who do not develop acne. When cells mix with the increased amount of sebum being produced, they can plug the opening of the follicle. Meanwhile, the sebaceous glands continue to produce sebum, and the follicle swells up with sebum.