We read all the time about the Norwood Hamilton Classification of Hair Loss in males, but we don’t read too much about how female pattern hair loss is classified.
The original Ludwig Classification of Hair Loss was a simple 3 grade system that did not depict distinctions in hair loss severity as did the 12 grade system depicted in the Norwood Hamilton Classification of hair loss in males.
To address this issue, the Savin scale of hair loss in women was developed in 1996 by Dr Ronald Savin, who felt that there was a need for consistent methodology for the recording and classification of hair loss patterns and hair density variations in women with androgenetic alopecia. He came up with 9 computer images, which are now typically referred to as the Savin Scale, as an accurate pictorial classification scale to quantify pattern hair loss clinically in women. The staged illustrations provided a finer visual gradient of hair loss pattern and density than the previous classification scale for women with pattern baldness, the Ludwig Scale.