Dorsum of the hand with an erythematous plaque that has overlying scale and fissuring. The skin is thickened in lichen simplex chronicus, often from chronic scratching or rubbing.

Erythema, scaling, marked xerosis, and angular erosions indicating excoriation characterized this lesion of lichen simplex chronicus.

The back of the neck is a common area for a plaque of lichen simplex chronicus. The patient often admits to repeated scratching of this area.