Decreased Benzothiazole-Type Pheomelanin in Regrown Brown Hair in Alopecia Areata

January 2018 in “ European journal of dermatology/EJD. European journal of dermatology ”

Naoki Oiso, Kazumasa Wakamatsu, Shigeto Yanagihara, Akira Kawada

alopecia areata benzothiazole-type pheomelanin eumelanin melanogenesis autoimmune

TLDR The girl's regrown brown hair had less of certain pigments than her original black hair.

The document presented a case study of a three-year-old Japanese girl with alopecia areata who experienced regrowth of brown hair with lower levels of benzothiazole-type pheomelanin and eumelanin compared to her original black hair. The study found that the concentration of eumelanin and benzothiazole-type pheomelanin was about 1.4 and 1.5 times higher in the black hair than in the brown hair, respectively. These results suggest a potential link between the reduced benzothiazole-type pheomelanin and the autoimmune nature of alopecia areata. The study emphasized the need for further research to explore how melanogenesis is altered in alopecia areata by examining a larger number of patients and different hair colors.

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