Relapsing fever is an infectious disease that can be passed to humans by ticks. Relapsing fever is most common in the western United States.
Symptoms usually start 3 to 11 days (average 6 days) after the tick bite. They may last for several days, go away, and then return (relapse) several days later. Symptoms of relapsing fever include:
Prescription medicine is used to treat relapsing fever.
WebMD Medical Reference from Healthwise