Goldin H M, Bronson D M, Fretzin D F
Pediatr Dermatol. 1984 Jul;2(1):41-4. doi: 10.1111/j.1525-1470.1984.tb00440.x.
Woolly-hair is a congenital defect that produces a localized patch of lightly colored, curly scalp hair. Scanning electron microscopy of the abnormal hairs demonstrates twisting of the hair shaft and abnormal cuticle formation.