The severity and nature of baldness can vary greatly; it ranges from male and female pattern alopecia, alopecia areata, which involves the loss of some of the hair from the head, and alopecia totalis, which involves the loss of all head hair, to the most extreme form of baldness, alopecia universalis, which involves the loss of all hair from the head and the body. The trigger for male pattern baldness, also called androgenic alopecia, is DHT, a powerful sex hormone that can adversely affect t...