Hair loss advice

Your hair loss may have started with a few extra hairs in the sink or in your comb. But now you can't look in the mirror without seeing more of your scalp.

Alopecia areata With alopecia areata, baldness usually occurs in small, round, smooth patches. You may lose only scalp hair, or you may lose body hair as well.

Causes About 90 percent of the hair on most people's scalps is in a two to six year growth (anagen) stage at any given time. The other 10 percent is in a two to three month resting (telogen) phase, after which time it is shed. Most people shed 50 to 150 hairs a day. Once a hair is shed, the growth stage begins again as a new hair from the same follicle replaces the shed hair. New hair grows at a rate of approximately one half inch each month.

Androgenetic alopecia Having androgenetic alopecia may mean you experience hair loss as early as during your teen years. For men, this type of baldness is typically characterized by hair loss that begins at the temples and crown. The end result may be partial or complete baldness. Women with androgenetic alopecia usually have hair loss limited to thinning at the front, sides or crown. Complete baldness rarely occurs in women.

What causes excessive hair loss? -  A number of things can cause excessive hair loss. For example, about 3 or 4 months after an illness or a major surgery, you may suddenly lose a large amount of hair. This hair loss is related to the stress of the illness and is temporary. Hormonal problems may cause hair loss. If your thyroid gland is overactive or underactive, your hair may fall out. This hair loss usually can be helped by treatment of the thyroid disease. Hair loss may occur if male or female hormones, known as androgens and estrogens, are out of balance. Correcting the hormone imbalance may stop your hair loss.

What is the normal cycle of hair growth and loss? -  At any one time, about 10 percent of the hair on your scalp is in a resting phase. After 2 to 3 months, the resting hair falls out and new hair starts to grow in its place. This growing phase lasts for 2 to 6 years. Each hair grows approximately 1 centimeter per month during this phase. About 90 percent of the hair on your scalp is growing at any one time.

Is hair loss normal?   Everyone normally has some hair loss every day. In fact, it is normal to lose up to about 100 hairs a day. However, some people can lose a lot of hair early in life because it usually runs in the family, inhereted from a parent or grandparent or because of disease, medications, stress, injury, or damage to the hair.

What causes androgenetic alopecia  -  Androgenetic alopecia is caused by heredity. Although it's most common among men, it can also affect women. A history of androgenetic alopecia on either side of your family increases your risk of balding. Heredity also affects the age at which you begin to lose hair and the developmental speed, pattern and extent of your baldness.

Baldness typically refers to excessive hair loss from your scalp and can be the result of heredity, certain medications or an underlying medical condition. Anyone men, women and children can experience hair loss.

Signs and symptoms The medical term for hair loss is alopecia. Pattern baldness (androgenetic alopecia), the most common type of alopecia, affects roughly one third of men and women. It's typically permanent. Another type of alopecia, alopecia areata, can be temporary. It can involve hair loss on your scalp or other parts of your body.