EXCLAMATION MARK HAIRS IN ALOPECIA AREATA
Variations In Size
Exclamation mark hairs are hairs that are quite short. Most exclamation mark hairs are 4-6 mm in length but rarely they can be longer depending on the amount of inflammation under the scalp beneath that specific hair. Here in this photo, we can see two exclamation mark hairs of different lengths - one is 3 mm and the other is nearly 15 mm in length. Exclamation mark hairs are seen in alopecia areata, trichotillomania and a few other conditions as well. They are important signs in alopecia areata as they indicate disease activity
This article was written by Dr. Jeff Donovan, a Canadian and US board certified dermatologist specializing exclusively in hair loss.