Erythema chronicum migrans with an intensely purpuric border developed in a 70-year-old woman. A biopsy specimen, in addition to showing the usual perivascular mononuclear infiltrate, demonstrated numerous polymorphonuclear leukocytes associated with leukocytoclasis. Immunofluorescence study showed vascular deposition of IgM and C3.
(Arch Dermatol 115:873-874, 1979)
Gross GP, Cooper PH, Nolan C. Erythema Chronicum Migrans With Purpura and Polymorphonuclear Infiltrates. Arch Dermatol. 1979;115(7):873-874. doi:10.1001/archderm.1979.04010070049024