Hair loss is referred to as alopecia. Patchy hair loss on the scalp is called alopecia areata. Complete scalp hair loss is alopecia totalis. Hair loss from the entire body, including the eyebrows, eyelashes, and body hair, is alopecia universalis. Update Date: 07/18/2007Kevin Berman, MD, PhD, Associate, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network.