Alopecia is the medical term for baldness; there are various types of alopecia, including alopecia areata.
Alopecia areata is a condition that causes a person's hair to fall out. It is an autoimmune disease; that is, the person's immune system attacks their own body. In this case, their hair follicles. When this happens, the person's hair begins to fall out, often in clumps the size and shape of a quarter. The extent of the hair loss varies; in some cases, it is only in a few spots. In others, the hair loss can be greater.
On rare occasions, the person loses all of the hair on his or her head (alopecia areata totalis) or entire body (alopecia areata universalis).
It is believed that the person's genetic makeup may trigger the autoimmune reaction of alopecia areata, along with other unknown triggers.
Alopecia areata is an unpredictable disease. In some people, hair grows back but falls out again later. In others, hair grows back and remains. Each case is unique. Even if someone loses all of his or her hair, there is a chance that it will grow back.
Who Gets Alopecia Areata?
Anyone can develop alopecia areata; however, your chances of having alopecia areata are slightly greater if you have a relative with the disease. In addition, alopecia areata occurs more often among people who have family members with autoimmune disorders such as diabetes, lupus, or thyroid disease.
Can Alopecia Areata Be Cured?
Alopecia areata cannot be cured; however, it can be treated and hair can grow back. In many cases, alopecia areata is treated with drugs that are used for other conditions. Treatment options for alopecia areata include:
- Corticosteroids: Anti-inflammatory drugs that are prescribed for autoimmune diseases. Corticosteroids can be given as an injection into the scalp or other areas, orally (as a pill), or applied topically (rubbed into the skin) as an ointment, cream, or foam. Response to therapy may be gradual.
- Topical contact allergens or sensitizers. This type of therapy may be used if the hair loss is widespread or if it recurs. The inflammation that the treatments cause may promote hair regrowth. Another name for this treatment is topical immunotherapy.
- Rogaine (minoxidil): This topical drug is already used as a treatment for pattern baldness. It usually takes about 12 weeks of treatment with Rogaine before hair begins to grow. Results can be disappointing.