Hamilton–Norwood scale

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The progression of male pattern baldness is generally classified on the Hamilton–Norwood scale, which ranges from stages I to VII.[1]

This measurement scale was first introduced by Dr James Hamilton in the 1950s and later revised and updated by Dr O'Tar Norwood in the 1970s.

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External links[edit]


  1. ^ "Reliability of Hamilton-Norwood Classification", Int J Trichology. 2009 Jul-Dec