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Colorado tick fever

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Colorado tick fever is an infectious viral disease that can be passed to humans by ticks. Colorado tick fever occurs in the mountain region of the western United States.

Symptoms usually start 1 to 14 days after you get the tick bite. Symptoms of Colorado tick fever include:

  • Fever and chills.
  • Headache, often severe.
  • Muscle aches (myalgias).
  • Sensitivity to light (photophobia).

Medical treatment can help relieve the symptoms of Colorado tick fever.

The Health Encyclopedia contains general health information. Not all treatments or services described are covered benefits for Kaiser Permanente members or offered as services by Kaiser Permanente. For a list of covered benefits, please refer to your Evidence of Coverage or Summary Plan Description. For recommended treatments, please consult with your health care provider.