Picture of Rickettsialpox (Tâche Noire)

Rickettsialpox or tâche noire is a disease causes by the bite of a mite that lives on mice. It causes a chickenpox like rash that resembles a cigarette burn at the site of a tick bite. It can cause flu-like symptoms including fever, achy muscles, chills, and weakness. It is usually mild and clears up on its own in 2-3 weeks if left untreated.