Patients who experience hair loss may notice hair shedding, poor hair quality, hair thinning or bald areas. There may be associated scalp disease or scarring. Balding begins by age 30 in about 25% of men and two-thirds begin losing their hair by age 60, according to the American Medical Association.
Also, about 50% of women over 50 describe the onset of some noticeable hair loss. In men, baldness patterns vary, from a receding hairline, to total loss of hair on the top of the head.
Women tend to have pronounced thinning of hair with retention of the frontal hairline. The scalp may become visible through the hair.