D efinition —A chronic, hyperproliferative, papulosquamous disorder with a relapsing course. Clinical Features Epidemiology Affects 1% to 2% of Caucasians. Onset is usually in the late 20s. A genetic component is likely, as first-degree relatives are also often affected. At…
D efinition —A cutaneous reaction related to scratching, often superimposed on other dermatoses. Clinical Features Epidemiology Lichen simplex chronicus (LSC) is not a distinctive disease but a clinical and pathologic response to repeated physical trauma such as rubbing or scratching.…
D efinition —A constellation of inflammatory conditions caused by a reaction to exogenous or endogenous factors. Including, but not limited to, exogenous dermatitis, irritant contact dermatitis, allergic contact dermatitis, atopic dermatitis, and nummular dermatitis. Clinical Features Epidemiology Seen in all…