Acne

Acne

Acne is a skin condition that occurs when your hair follicles become plugged with oil and dead skin cells. Acne most commonly appears on your face, neck, chest, back and shoulders. Acne can be distressing and annoyingly persistent. Acne lesions heal slowly, and when one begins to resolve, others seem to crop up.

Depending on its severity, acne can cause emotional distress and lead to scarring of the skin. The good news is that effective treatments are available — and the earlier treatment is started, the lower your risk of lasting physical and emotional damage.

Causes:

Three factors contribute to the formation of acne:

Overproduction of oil (sebum)
Irregular shedding of dead skin cells resulting in irritation of the hair follicles of your skin
Buildup of bacteria

Acne occurs when the hair follicles become plugged with oil and dead skin cells. Hair follicles are connected to sebaceous glands. These glands secrete an oily substance known as sebum to lubricate your hair and skin. Sebum normally travels up along the hair shafts and then out through the openings of the hair follicles onto the surface of your skin. When your body produces an excess amount of sebum and dead skin cells, the two can build up in the hair follicles and form together as a soft plug, creating an environment where bacteria can thrive.

This plug may cause the follicle wall to bulge and produce a whitehead. Or, the plug may be open to the surface and may darken, causing a blackhead. Pimples are raised red spots with a white center that develop when blocked hair follicles become inflamed or infected. Blockages and inflammation that develop deep inside hair follicles produce lumps beneath the surface of your skin called cysts. Other pores in your skin, which are the openings of the sweat glands onto your skin, aren't normally involved in acne.

Factors that may worsen acne
These factors can trigger or aggravate an existing case of acne:

Hormones. Androgens are hormones that increase in boys and girls during puberty and cause the sebaceous glands to enlarge and make more sebum. Hormonal changes related to pregnancy and the use of oral contraceptives can also affect sebum production.
Certain medications. Drugs containing corticosteroids, androgens or lithium are known to cause acne.
Diet. Studies indicate that certain dietary factors, including dairy products and carbohydrate-rich foods — such as bread, bagels and chips, which increase blood sugar — may trigger acne.

Acne myths
Contrary to what some people think, these factors have little effect on acne:

Greasy foods and chocolate have proved to have little to no effect on the development or course of acne.
Dirty skin. Acne isn't caused by dirt. In fact, scrubbing the skin too hard or cleansing with harsh soaps or chemicals irritates the skin and can make acne worse. Simple cleansing of the skin to remove excess oil and dead skin cells is all that's required.

Alternative medicine:

Some studies suggest that taking the following supplements may help treat acne:

Tea tree oil. Gels containing 5 percent tea tree oil may be as effective as are lotions containing 5 percent benzoyl peroxide, although tea tree oil might work more slowly. Tea tree oil may cause a skin reaction known as contact dermatitis. There's also some concern that topical products containing tea tree oil might cause breast development in young boys. Don't use tea tree oil if you have acne rosacea because it can worsen symptoms.
Alpha hydroxy acids. These natural acids — found in foods such as citrus fruits, sugar cane, apples and grapes — help remove dead skin cells and unclog pores when applied topically. Alpha hydroxy acids may also improve the appearance of acne scars. Adverse reactions to alpha hydroxy acids include redness, mild stinging and skin irritation.
Azelaic acid. This naturally occurring acid is found in whole-grain cereals and animal products and has antibacterial properties. A 20 percent azelaic acid cream seems to be as effective as many other conventional acne treatments, including 5 percent benzoyl peroxide and oral tetracycline.
Zinc supplements. The mineral zinc plays a role in wound healing and reduces inflammation, which could help improve acne. Taking a zinc supplement with food may reduce side effects, including a bad taste in your mouth and nausea. Zinc can also be added to lotions or creams and may reduce acne breakouts.
Brewer's yeast. A specific strain of brewer's yeast, called CBS 5926, seems to help decrease acne. Brewer's yeast may cause migraines in susceptible people and may cause intestinal upset.

More research is needed to understand the potential role of these and other dietary supplements in the treatment of acne.

Always talk with your doctor before trying a natural remedy. Dietary supplements can cause side effects and may alter the safety and effectiveness of certain medications.