Male-Type Alopecia, Alopecia Areata, and Normal Hair in Women

The family histories of scalp hair growth of 56 women with male-type alopecia have been compared with those of women with alopecia areata and with normal controls. Of the first-degree relatives of the propositi with male-type alopecia who were more than 30 years old, 54% of the males and 23% of the females also had this trait, compared with figures of 20.5% and 7% among the relatives of the alopecia areata propositi, and slightly lower figures still among the relatives of the normal controls.