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June 1981

Tropical Rat Mite DermatitisReport of Six Cases and Review of Other Mite Infestations

Author Affiliations

From the Department of Medical Microbiology, University of California School of Medicine, Davis (Dr Theis); the Department of Veterinary Microbiology, University of California School of Veterinary Medicine, Davis (Dr Lavoipierre); and the Department of Dermatology, The Permanente Medical Group, Sacramento, Calif (Drs LaPerriere and Kroese).

Arch Dermatol. 1981;117(6):341-343. doi:10.1001/archderm.1981.01650060031018

† Six cases of tropical rat mite (Ornithonyssus bacoti) dermatitis are presented. The patients experienced papular urticaria, and mites were found on and identified in several of the patients. The presence of rodents in or around the home was confirmed in most cases. The role of other parasitic mites found on bats, birds, and snakes is reviewed. The importance of obtaining a history of rodent activity or exposure to other animals is emphasized when considering the cause of arthropod bites.

(Arch Dermatol 1981;117:341-343)