Familial Jessner's lymphocytic infiltration of the skin, occurring in a father and daughter.

Familial occurrence of Jessner's lymphocytic infiltration of the skin is reported in a father and daughter. A definitive diagnosis of Jessner's disease was greatly facilitated by the presence of large numbers of plasmacytoid monocytes within the dermal infiltrates in both patients. A role for skin-directed lymphocyte migration is suggested to account for the presence of this peculiar cell type.