[Mechanically-induced contact dermatitis and psoriasis].

Frictional eczema seems to be quite common, as is here illustrated by means of a few examples. A post-office official showed an eczema on both palms brought on by a rough tabletop . A bus driver had an eczema of the fingertips caused by contact with tickets . Mechanically provoked psoriasis of the palms is well-known. The frequency of other frictional dermatoses, however, seems to be underestimated.