Skin biopsy in suspected delusional infestation

Skin biopsies and examination of specimens provided by patients do not constitute evidence of skin infestation in patients with suspected delusional infestation

This retrospective medical record review included all patients who had a diagnosis of delusional skin infestation at the Mayo Clinic, US, between 2001 and 2007. Eighty patients underwent biopsy, 80 patients provided specimens and 52 patients had a biopsy and provided specimens. None of the biopsies provided evidence to support skin infestation. Ten of the patient-provided specimens contained insects, nine of which were non-infesting.
Hylwa SA, Bury JE, Davis MP et al. Arch Dermatol 2011

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