Female pattern hair loss (FPHL) has also been called androgenetic alopecia, male pattern baldness in women, and diffuse alopecia. FPHL is a common condition, affecting up to 50% of women. It presents as hair thinning, mainly on the crown, but sometimes also affecting the parietal, posterior vertex and bitemporal areas. There is relative preservation of hair density on the occipital scalp. The frontal hairline is usually preserved. There is often accentuation of the thinning in the midline, just posterior to the frontal hairline (Christmas tree pattern). Rarely, there is deep bitemporal notching and frontal recession similar to male balding.