Acne
Acne vulgaris; Cystic acne; Pimples; Zits
Acne is a skin condition that causes pimples or "zits." Whiteheads, blackheads, and red, inflamed patches of skin (such as cysts) may develop.
Causes
Acne occurs when tiny holes on the surface of the skin become clogged. These holes are called pores.
- Each pore opens to a follicle. A follicle contains a hair and an oil gland. The oil released by the gland helps remove old skin cells and keeps your skin soft.
- When glands produce too much oil, the pores can become blocked. Dirt, bacteria, and inflammatory cells build up. The blockage is called a plug or comedone.
-
If the top of the plug is white, it is called a
whitehead
.
Whitehead
Whiteheads are small, white, raised bumps on the skin. They form when oil and skin collect in the pores. Whiteheads are also known as closed comedo...
-
If the top of the plug is dark, it is called a
blackhead
.
Blackhead
Blackheads are tiny, dark spots on the skin. They are caused by a small plug in the opening of a follicle (pore). Blackheads are also called open c...
- If the plug breaks open, swelling and red bumps occur.
-
Acne that is deep in your skin can cause hard, painful
cysts
. This is called nodulocystic acne.
Cysts
A cyst is a closed pocket or pouch of tissue. It can be filled with air, fluid, pus, or other material.
Acne is most common in teenagers, but anyone can get acne, even babies. The problem tends to run in families.
Some things that may trigger acne include:
- Hormonal changes that make the skin oilier. These may be related to puberty, menstrual periods, pregnancy, birth control pills, or stress.
- Greasy or oily cosmetic and hair products.
-
Certain drugs (such as steroids,
testosterone
, estrogen, and phenytoin).
Testosterone
A testosterone test measures the amount of the male hormone, testosterone, in the blood. Both men and women produce this hormone. The test described...
- Heavy sweating and humidity.
Research does not show that chocolate, nuts, and greasy foods cause acne. However, diets high in refined sugars or dairy products may be related to acne in some people.
Symptoms
Acne commonly appears on the face and shoulders. It may also occur on the trunk, arms, legs, and buttocks. Skin changes include:
- Crusting of skin bumps
-
Cysts
Cysts
A cyst is a closed pocket or pouch of tissue. It can be filled with air, fluid, pus, or other material.
- Papules (small red bumps)
-
Pustules
Pustules
Pustules are small, inflamed, pus-filled, blister-like sores (lesions) on the skin surface.
- Redness around the skin eruptions
- Scarring of the skin
-
Whiteheads
Whiteheads
Whiteheads are small, white, raised bumps on the skin. They form when oil and skin collect in the pores. Whiteheads are also known as closed comedo...
-
Blackheads
Blackheads
Blackheads are tiny, dark spots on the skin. They are caused by a small plug in the opening of a follicle (pore). Blackheads are also called open c...
Exams and Tests
Your health care provider can diagnose acne by looking at your skin. Testing is not needed in most cases. Bacterial culture may be performed to rule out infection if large pus bumps persist.
Treatment
SELF-CARE
Steps you can take to help your acne :
Acne
Acne vulgaris - self-care; Cystic acne - self-care; Pimples - self-care; Zits - self-care
- Clean your skin gently with a mild, nondrying soap (such as Dove, Neutrogena, Cetaphil, CeraVe, or Basics).
- Look for water-based or "noncomedogenic" formulas for cosmetics and skin creams. (Noncomedogenic products have been tested and proven not to clog pores and cause acne.)
- Remove all dirt or make-up. Wash once or twice a day, including after exercising.
- Avoid scrubbing or repeated skin washing.
- Shampoo your hair daily, especially if it is oily.
- Comb or pull your hair back to keep the hair out of your face.
What NOT to do:
- Try not to squeeze, scratch, pick, or rub the pimples. This can lead to skin infections and scarring.
- Avoid wearing tight headbands, baseball caps, and other hats.
- Avoid touching your face with your hands or fingers.
- Avoid greasy cosmetics or creams.
- DO NOT leave make-up on overnight.
If these steps do not clear up the blemishes, try over-the-counter acne medicines that you apply to your skin.
- These products may contain benzoyl peroxide, sulfur, resorcinol, or salicylic acid.
- They work by killing bacteria, drying up skin oils, or causing the top layer of your skin to peel.
- They may cause redness, drying, or peeling of the skin.
A small amount of sun exposure may improve acne slightly, but tanning mostly hides the acne. Too much exposure to sunlight or ultraviolet rays is not recommended because it increases the risk for skin cancer.
MEDICINES FROM YOUR HEALTH CARE PROVIDER
If pimples are still a problem, a provider can prescribe stronger medicines and discuss other options with you.
Antibiotics may help some people with acne:
- Oral antibiotics (taken by mouth) such as tetracycline, doxycycline, minocycline, erythromycin, trimethoprim, and amoxicillin
- Topical antibiotics (applied to the skin) such as clindamycin, erythromycin, or dapsone
Creams or gels applied to the skin may be prescribed:
- Retinoic acid cream or gel (tretinoin, Retin-A)
- Prescription formulas of benzoyl peroxide, sulfur, resorcinol, or salicylic acid
- Topical azelaic acid
For women whose acne is caused or made worse by hormones:
- A pill called spironolactone may help.
- Birth control pills may help in some cases, though they may make acne worse in some women.
Minor procedures or treatments may also be helpful:
- A laser procedure called photodynamic therapy may be used.
-
Your provider may also suggest chemical skin peeling; removal of scars by
dermabrasion
; or removal, drainage, or injection of
cysts
with cortisone.
Dermabrasion
Dermabrasion is the removal of the top layers of the skin. It is a type of skin-smoothing surgery.
Cysts
A cyst is a closed pocket or pouch of tissue. It can be filled with air, fluid, pus, or other material.
People who have cystic acne and scarring may try a medicine called isotretinoin (Accutane). You will be watched closely when taking this medicine because of its side effects.
Pregnant women should NOT take Accutane, because it causes severe birth defects.
- Women taking Accutane must use 2 forms of birth control before starting the drug and enroll in the iPledge program.
- Men also need to be enrolled in the iPledge program.
- Your provider will follow you on this drug and you will have regular blood tests.
Outlook (Prognosis)
Most of the time, acne goes away after the teenage years, but it may last into middle age. The condition often responds well to treatment after 6 to 8 weeks, but may flare up from time to time.
Scarring may occur if severe acne is not treated. Some people become very depressed if acne is not treated.
When to Contact a Medical Professional
Call your provider if:
- Self-care steps and over-the-counter medicine do not help after several months.
- Your acne is very bad (for example, you have a lot of redness around the pimples, or you have cysts).
- Your acne is getting worse.
- You develop scars as your acne clears up.
- Acne is causing emotional stress.
If your baby has acne, call the baby's provider if acne does not clear up on its own within 3 months.
References
Habif TP. Acne, roacea, and related distorders. In: Habif TP, ed. Clinical Dermatology . 6th ed. St. Louis, MO: Elsevier Saunders; 2016:chap 7.
Zaenglein AL, Thiboutot DM. Acne vulgaris. In: Bolognia JL, Jorizzo JL, Schaffer JV, et al, eds. Dermatology . 3rd ed. Philadelphia, PA: Elsevier Mosby; 2012:chap 36.
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Acne
Animation
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Baby acne - illustration
Baby acne is usually seen on the cheeks, chin, and forehead. It can be present at birth but usually develops around 3 to 4 weeks of age. Baby acne occurs when hormonal changes in the body stimulate oil glands in the baby's skin. The condition can look worse when the baby is crying or fussy, or any other instance that increases blood flow to the skin. Baby acne is harmless and usually resolves on its own within several weeks.
Baby acne
illustration
-
Acne - close-up of pustular lesions - illustration
Acne lesions frequently contain pus. This close-up photograph shows small acne pustules with surrounding inflammation (erythema).
Acne - close-up of pustular lesions
illustration
-
Blackheads (comedones) - illustration
Blackheads, or open comedones, are common in acne. Clogged hair follicles reflect light irregularly to produce this black hue.
Blackheads (comedones)
illustration
-
Acne, cystic on the chest - illustration
Cystic acne may occur across the upper chest as well as on the back.
Acne, cystic on the chest
illustration
-
Acne, cystic on the face - illustration
The face is the most common location of acne. Here, there are 4 to 6 millimeter red (erythematous) pustules, some with bridging scars and fistulous tract formation (connecting passages). Severe acne may have a profound psychological impact and may cause scarring. Effective treatments are available for this type of acne.
Acne, cystic on the face
illustration
-
Acne, vulgaris on the back - illustration
Acne frequently occurs on the back. Here, there are 2 to 6 millimeter wide erythematous (red) pustules with large open and closed comedones. Permanent scarring may follow a severe case of acne. Men are more often affected on their shoulders and back than are women.
Acne, vulgaris on the back
illustration
-
Acne on the back - illustration
Acne affects the areas of the skin that contain sebaceous glands, including the face, upper chest, and back. Acne occurs most commonly during adolescence. Many new treatment regimens are available for acne, especially for the most severe types.
Acne on the back
illustration
-
Acne - illustration
Acne is a skin condition that causes whiteheads, blackheads, and inflamed red lesions to form. These growths are commonly called pimples or "zits." Three out of four teenagers have acne to some extent.
Acne
illustration
-
Baby acne - illustration
Baby acne is usually seen on the cheeks, chin, and forehead. It can be present at birth but usually develops around 3 to 4 weeks of age. Baby acne occurs when hormonal changes in the body stimulate oil glands in the baby's skin. The condition can look worse when the baby is crying or fussy, or any other instance that increases blood flow to the skin. Baby acne is harmless and usually resolves on its own within several weeks.
Baby acne
illustration
-
Acne - close-up of pustular lesions - illustration
Acne lesions frequently contain pus. This close-up photograph shows small acne pustules with surrounding inflammation (erythema).
Acne - close-up of pustular lesions
illustration
-
Blackheads (comedones) - illustration
Blackheads, or open comedones, are common in acne. Clogged hair follicles reflect light irregularly to produce this black hue.
Blackheads (comedones)
illustration
-
Acne, cystic on the chest - illustration
Cystic acne may occur across the upper chest as well as on the back.
Acne, cystic on the chest
illustration
-
Acne, cystic on the face - illustration
The face is the most common location of acne. Here, there are 4 to 6 millimeter red (erythematous) pustules, some with bridging scars and fistulous tract formation (connecting passages). Severe acne may have a profound psychological impact and may cause scarring. Effective treatments are available for this type of acne.
Acne, cystic on the face
illustration
-
Acne, vulgaris on the back - illustration
Acne frequently occurs on the back. Here, there are 2 to 6 millimeter wide erythematous (red) pustules with large open and closed comedones. Permanent scarring may follow a severe case of acne. Men are more often affected on their shoulders and back than are women.
Acne, vulgaris on the back
illustration
-
Acne on the back - illustration
Acne affects the areas of the skin that contain sebaceous glands, including the face, upper chest, and back. Acne occurs most commonly during adolescence. Many new treatment regimens are available for acne, especially for the most severe types.
Acne on the back
illustration
-
Acne - illustration
Acne is a skin condition that causes whiteheads, blackheads, and inflamed red lesions to form. These growths are commonly called pimples or "zits." Three out of four teenagers have acne to some extent.
Acne
illustration
Review Date: 7/23/2015
Reviewed By: Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.