Hypertrichosis is an increase in the amount of hair anywhere on the body in either sex. The excess hair may grow all over the body or only in specific locations. The hair may be fine, light-colored, and downlike or thick, dark, and long. This disorder may be present at birth or develop later.
Hair growth depends on the balance between male and female hormones. Male hormones stimulate the growth of thick, dark hair.
Various treatment options are available depending upon cause.