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).
©LDA. Information updated, 11-1-2014. This web site provides practical and useful information on the subject matters covered. It is distributed with the understanding that LDA is not engaged in rendering medical or other professional services. Seek professional services if necessary.