Pemphigus vegetans with coexistent herpes simplex infection and deep venous thrombosis of the lower extremities.

An elderly patient presented with a 4-month history of eroded hypertrophic condylomatous plaques with areas of vesiculation on the groin and lower extremities bilaterally, associated with swelling. Biopsy and immunofluorescence studies confirmed the diagnosis of pemphigus vegetans (PVeg). Further clinical evaluation revealed deep venous thrombosis of the lower extremities and septic shock from secondarily infected pemphigus lesions. Fluid obtained from vesicles was positive for herpes simplex virus (HSV) via PCR-based testing. The patient was therapeutically anticoagulated, treated with high-dose corticosteroid therapy, broad-spectrum intravenous antibiotics and acyclovir. This case represents a constellation of diagnoses not previously described. Although pemphigus vulgaris has been linked to thromboembolic events and has been associated with HSV, these associations have not been previously reported in PVeg. The coexistence of these diseases should encourage vigilance in the clinical work up of a patient with PVeg.