Androgenetic alopecia, on the other hand, is an inherited form of hair loss. With alopecia areata, hair can fall out in patches all over the body. With androgenetic alopecia, hair on the head thins and falls out. In men, this is called male pattern hair loss; in women, it is called female diffuse hair loss. About 60% of people with androgenetic alopecia are men. Hair loss caused by androgenetic alopecia is permanent.