Fissures

Fissures are solutions of continuity, and are characterized by varying length and depth, but with scarcely appre­ciable breadth. They rarely extend deeper than through the horny or Malpighian layers, though sometimes they penetrate the cutis vera. They are frequently accompanied with a scanty serous exudation.

The principal diseases in which fissures are found, and their chief features are:

1. Eczema; Especially at flexor aspect of joints, palms of the hands, and soles of the feet.
2. Leprosy; Especially at extensor aspect of small joints or between them,  and  usually  accompanied with  anaesthesia.