Regrowth of Black Hair in Two Red-Haired Alopecia Areata Patients
February 2012
in “
Australasian Journal of Dermatology
”
TLDR Two red-haired men with alopecia areata regrew black hair instead of red.
The document reported two cases of red-haired men with patch-type alopecia areata (AA) who experienced regrowth of black hair instead of their natural red hair. This phenomenon was previously reported only once, following cyclophosphamide administration. The unexpected change in hair color raised questions about the role of pigmentation and the melanocortin-1 receptor in the pathogenesis of AA.
