Exclamation mark hairs in AA
Exclamation mark hairs are 3-4 mm hairs that are wide at the top and thin at the bottom. They are seen in individuals who have recently developed a patch of alopecia areata.
These hairs are caused by the inflammation around the hair bulb that impairs the ability of the hair matrix to make a proper hair.
Long standing alopecia areata does not have much inflammation and correspondingly exclamation mark hairs are not seen.
Dr. Jeff Donovan is a Canadian and US board certified dermatologist specializing exclusively in hair loss. To schedule a consultation, please call the Vancouver office at 604.283.9299