Rocky Mountain Spotted Fever (RMSF)
Rocky Mountain spotted fever (RMSF) is a bacterial disease spread through the bite of an infected tick. Most people who get sick with RMSF will have a fever, headache, and rash. RMSF can be deadly if not treated early with the right antibiotic.
There is no vaccine for RMSF. The first step for preventing this devastating disease is to prevent tick bites.
If you find a tick attached to your skin, there’s no need to panic—the key is to remove the tick as soon as possible.
Page last reviewed: May 7, 2019