Posts Tagged ‘Images’

Men’s Hamilton Norwood & Other Hair Loss Classification Scales

Wednesday, December 29th, 2010

In men, male pattern baldness (MPB) or Androgenic Alopecia (AGA) can be identified and defined visually.

A study published in December, 2004 entitled “Validity of self reported male balding patterns in epidemiological studies” examined and compared the accuracy and reliability of the assessment of balding patterns when conducted by “trained observers” verses assessments of balding patterns conducted by “men” who are experiencing the balding themselves.

In this study, the trained observers and “men” used a classification system known as the “Hamilton-Norwood classification system” (shown below). This study found while it was best to have a trained observer assess the balding pattern, it found that “men’s self evaluation is accurate enough to ensure reliability and validity of results.” In other words, a man should be able to assess his own hair loss pattern using this scale reliably. [*1]

 

A related article posted today 9/18/2011 Male Pattern Baldness: classification and Incidence – by NORWOOD, O’TAR T. MD features a PDF document with the full text by Dr Norwood himself and his scale.

 

The Hamilton Norwood Classification Scale was created in 1975 and is shown next.


Figure 1. Hamilton Norwood Classification Scale (OT Norwood, 1975)

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Hair Follicle Scalp Images

Wednesday, December 29th, 2010

Find images, illustrations and cross sections of scalps and hair follicles below – These are posted here for educational purposes.

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