Excessive Hair Loss
Thursday, May 28, 2009
It is normal to shed some hair each day. If you have excessive hair loss, however, it could be the sign of a medical problem. Dr. Edward Hill discusses some of the causes of this condition in todayís 60 Second Housecall.
At any one time, about 10 percent of the hair on your scalp is in a resting phase. After two to three months, the resting hair falls out and new hair starts to grow in its place. This growing phase lasts for two to six years. Each hair grows approximately one centimeter per month during this phase and about 90 percent of the hair on your scalp is growing at any one time.
Many things can cause excessive hair loss.
- Hormonal problems, such as an overactive thyroid gland
- An improper balance of male and female hormones. This often occurs during pregnancy
- Certain medicines, such as blood thinners, chemotherapy, gout medications, excessive vitamin A, birth control pills and antidepressants
- Infections, such as fungal scalp infections, and
- Diseases, such as lupus or diabetes
If you notice a sudden loss of hair, you should see your physician. This may be a sign of an underlying medical problem.
For North Mississippi Medical Center, Iím Dr. Edward Hill.