baldness

baldness Lack or loss of hair on the scalp. Also known as alopecia. There are many types of baldness, each with a different cause. Baldness may be localized to the front and top of the head, as in the very common type of male-pattern baldness; baldness may be patchy, a condition called alopecia areata; or it may involve the entire head, as in alopecia capitis totalis. See alopecia; alopecia areata; alopecia capitis totalis; alopecia, traumatic; alopecia universalis.