JAAD online

Cutaneous pseudolymphoma localized to black tattoo

The immune system protects our organism and, of course, our skin from harmful factors. One of the key elements of the immune system is lymphocytes. Lymphocytes play a role in the pathogenesis of various skin diseases. Lymphocytic infiltrates are seen in many skin diseases. Some of the skin diseases characterized by lymphocytic infiltration show up in specific anatomic locations, whereas other entities can be placed in all areas of the body. The course of lymphocytic infiltrations of the face is variable and unpredictable, most often lasting from months to years. The most important diseases with lymphocytic infiltration of the face are pseudolymphomas. This review discusses various types of cutaneous pseudolymphomas and other diseases with lymphocytic infiltration mainly involving the face.