Derm Dx: Fine, dry scales on the trunk and extremities

An 11-year-old girl presented to the dermatology clinic complaining of “dry skin” on her shins. The condition had been present since early childhood, but its appearance had not bothered the girl until recently.

Physical examination revealed fine, dry, “pasted-on” scales and follicular plugging (Figure 1) on much of her trunk and extremities. The lesions were especially notable on the dorsal ...