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Bites and Infestations

Picture of Rickettsialpox (Tâche Noire)

Picture of Rickettsialpox: Tache Noire

Rickettsialpox (tâche noire) is a crusty, scab-like lesion with a red halo that occurs at the site of a mite bite. The lesion is caused by the Rickettsia akari bacteria that is harbored by mites that are associated with rodents. Fever, chills, swollen lymph nodes, rash, muscle pain, headache, and sweating may be associated with the condition.

Image Source: Fitzpatrick's Color Atlas & Synopsis of Clinical Dermatology Klaus Wolff, Richard Allen Johnson, Dick Suurmond Copyright 2005, 2001, 1997, 1993 by The McGraw-Hill Companies. All Rights reserved.

Text Reference: "Rickettsialpox." Boston Public Health Commission.