Card Test for Miniaturization
Terminal Hairs are normal caliber (thick) hairs that are typically found all over the scalp. Thinner caliber hairs can be seen in many hair disorders including androgenetic alopecia, alopecia areata, traction alopecia as well as a few other conditions.
This photos shows a thinner "miniaturized" hair in an individual with androgenetic alopecia using a simple "card test." The card test is among the easiest of the means to evaluate hair caliber although other methods such as dermoscopy and videodermoscopy may allow actual quantification of hair caliber in terms of the precise dimensions.
Dr. Jeff Donovan is a Canadian and US board certified dermatologist specializing exclusively in hair loss. To schedule a consultation, please call the Whistler office at 604.283.1887