JAMES M.GRICHNIKMD, PhD
The diagnosis of pediculosis corporis is often straightforward; however, rare presentations may cause a diagnostic dilemma. We have seen cases in which body lice infestation results in an erythrodermic eruption. Notably, affected skin was limited to areas covered by clothing, and the face and hands were spared. Erythematous, lichenified, scaly plaques and linear excoriations were noted over the entire trunk, upper extremities, and lower extremities with sharp demarcation and transition to normal skin at the wrists and neck (Figures 1, 2, and 3). Body lice were diagnosed by visualization.
Irizarry E, Brownell I, Pomeranz MK. The “Louse Blouse” as a Cause of Erythroderma. Arch Dermatol. 2007;143(5):682. doi:10.1001/archderm.143.5.682