Rocky Mountain spotted fever (RMSF) is caused by the bacterium Rickettsia rickettsii.
Symptoms include headaches, myalgia, and a characteristic rash* usually beginning on wrists, ankles, palms and soles. *RMSF rash photo courtsey of Ed Masters, MD.
Treatment is usually tetracycline.
Ticks that transmit Rocky Mountain spotted fever include Amblyomma americanum (lone star), Dermacentor variabilis (American dog) and Dermacentor andersoni (wood tick).
Also see American Dog Ticks, Bears, & RMSF http://lymediseaseassociation.org/index.php/lda-news-a-updates/1450-america-dog-ticks-bears-a-rmsf
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