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.
169 citations
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November 2009 in “The Journal of Clinical Endocrinology & Metabolism” This study found that prepubertal girls have significantly higher levels of estrogens and androgen metabolites compared to age-matched boys, which may contribute to their earlier onset of puberty.
This study found that hair and nails can effectively measure hormone changes such as testosterone, estrogen, and progesterone during the peripubertal period in dogs, with variations observed between males and females at specific developmental stages.
192 citations
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January 1976 in “The Journal of Clinical Endocrinology & Metabolism” This study observed that androgen levels rise with pubic hair development in Tanner stages, differing by sex and age, with DHEA showing a significant prepubertal increase especially in precocious adrenarche.
10 citations
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November 1997 in “British Journal of Dermatology” This case report documents acquired progressive kinking of the hair in a prepubertal boy but does not provide new clinical results.