16 citations
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October 2012 in “The Journal of Dermatology” This study found that the BASP classification system for pattern hair loss showed better reproducibility and repeatability compared to the Norwood-Hamilton classification.
63 citations
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October 2005 in “Archives of Dermatology” This study reports that a hair shedding threshold of 100 hairs or more may provide the best concordance with clinical diagnosis for distinguishing chronic telogen effluvium from androgenetic alopecia.
16 citations
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January 2002 in “Dermatology” This study found that the parietal/occipital hair density ratio decreases significantly only when baldness is visibly present, making it no better than the Hamilton/Norwood scale for assessing baldness severity.
14 citations
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January 1999 in “Dermatology” This study found that the wash test reliably measures hair shedding in children, with the number of shed hairs increasing with age and suggesting a potential early onset of androgenetic alopecia.