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Beauty For Life

What Is Alopecia Areata?

Alopecia areata is considered an autoimmune disease, in which the immune system, which is designed to protect the body from foreign invaders such as viruses and bacteria, mistakenly attacks the hair follicles, the tiny cup-shaped structures from which hairs grow. This can lead to hair loss on the scalp and elsewhere.

In most cases, hair falls out in small, round patches about the size of a quarter. In many cases, the disease does not extend beyond a few bare patches. In some people, hair loss is more extensive. Although uncommon, the disease can progress to cause total loss of hair on the head (referred to as alopecia areata totalis) or complete loss of hair on the head, face, and body (alopecia areata universalis).

What Causes It?

In alopecia areata, immune system cells called white blood cells attack the rapidly growing cells in the hair follicles that make the hair. The affected hair follicles become small and drastically slow down hair production. Fortunately, the stem cells that continually supply the follicle with new cells do not seem to be targeted. So the follicle always has the potential to regrow hair.

Scientists do not know exactly why the hair follicles undergo these changes, but they suspect that a combination of genes may predispose some people to the disease. In those who are genetically predisposed, some type of trigger--perhaps a virus or something in the person's environment--brings on the attack against the hair follicles.

Who Is Most Likely To Get It?

Alopecia areata affects an estimated four million Americans of both sexes and of all ages and ethnic backgrounds. It often begins in childhood.

If you have a close family member with the disease, your risk of developing it is slightly increased. If your family member lost his or her first patch of hair before age 30, the risk to other family members is greater. Overall, one in five people with the disease have a family member who has it as well.

Source: Adapted from National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)

 

Part 1: What is alopecia areata?

Part 2: Is alopecia heredity?

Part 3: Is my hair loss a serious disease?

Part 4: Treatments for alopecia

Part 5: Will my hair grow back?

Part 6: How can I cope with alopecia?

Part 7: What can I expect later in life?

Further information:  www.alopecia-sydney.com

 
 
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