This document discusses grading scales used to assess androgenetic alopecia, or male and female pattern baldness. It describes several scales, including the Norwood-Hamilton scale from 1970 which grades male pattern baldness into stages I through VII. The Bouhana scale from 1976 is a modified version of the Norwood-Hamilton scale that allows for more rapid assessment. For female pattern hair loss, scales discussed include the Ludwig scale from 1977, Olsen scale from 1999, Savin scale from 1994, and Gan-Sinclair scale from 2006, with the Norwood-Hamilton scale also sometimes used. The scales are used as a basis for grading hair loss patterns and assessing treatment approaches.

1. GRADING IN
ANDROGENIC ALOPECIA

2. ALOPECIA ANDROGENETICA
• ‘COMMON BALDNESS’ / PATTERN ALOPECIA
PATTERNED LOSS OF HAIR WITH INCREASING AGE
IN GENERICALLY PREDISPOSED INDLs
• POLYGENIC INHERITANCE
(STRESS-DIATHESIS MODEL)
ANDROGENIC + GENETIC

3. TYPES OF AGA
• MALE PATTERN BALDNESS (70%)
• FEMALE PATTERN HAIR LOSS (40%)

5. GRADING : MPB
NORWOOD-HAMILTON SCALE (1970)
BOUHANA SCALE (1976)

6. NORWOOD-HAMILTON SCALE
• Dr JAMES HAMILTON (1950s)
• Dr O’TAR NORWOOD (1970s)
STAGES I – VII
VARIANTS - ANTERIOR (A) & VERTICAL (V)

9. BOUHANA SCALE
• Dr PIERRE BOUHANA (1976)
Modified Norwood-Hamilton Scale
RAPID ASSESSMENT & SCORING

11. GRADING : FPHL
LUDWIG SCALE ( I – III) 1977
OLSEN SCALE 1999
SAVIN SCALE ( I - V ) 1994
GAN – SINCLAIR ( I – V ) 2006
NORWOOD-HAMILTON SCALE (RARE)

12. BASIS OF GRADING

13. LUDWIG SCALE (1977)

14. OLSEN SCALE (1999)

15. OLSEN SCALE (1999)

16. SINCLAIR SCALE (2006)

17. SAVIN SCORE (1994)

18. THANK YOU