It is characterized by a sudden onset of chills, fever, headache and bloodshot eyes. The rash characteristically starts on the hands and feet and gradually spreads to most of the body. It is easily misdiagnosed as measles. Diagnosis is aided by a history of a recent tick bite and confirmed by a blood test. The fatality rate is about 5 percent.
Antibiotics give good treatment.
The American dog tick and lone star tick are the major vectors. The best way to avoid tick bites when on wooded trails, in high grass or brush areas is to take some personal precautions. Wear long pants. Tuck the pant leg into your socks and tuck your shirt under your belt. The tick will move up toward the head where detection is easier.