Variants of female pattern hair loss in men

Female pattern hair loss (FPHL) presents with hair thinning on the mid-frontal scalp and crown with retention of the anterior hairline. In a proportion of women with FPHL, there is a gradual decrease in hair density from the vertex to the frontal region, resulting in a triangular or 'Christmas tree' pattern. Despite what its name may suggest, FPHL can also affect men. However, the Christmas tree pattern has only been used to describe frontal accentuation of hair loss in women. The aim of our study was to determine patterns of FPHL in men.