Common Causes of Hair Loss
What Is Patterned Hair Loss?
Patterned hair loss involves progressive symmetric thinning of hair, most prominently at the front, top, and sides of the scalp. Thinning of the hairline in these areas occurs in both sexes; however, pronounced recession of the hairline is primarily seen in men. The most common form of patterned hair loss worldwide is androgenetic alopecia, which is a hereditary condition caused by exposure to the male sex hormone dihydrotestosterone, with onset after puberty.
