Orphanet: Colorado tick fever

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Colorado tick fever

Disease definition

An acute arboviral infection caused by a Coltivirus transmitted by an infected tick and characterized by a biphasic fever with headache, myalgias, arthralgias, and fatigue that can last 3 weeks or more. In some cases, macular, maculopapular, or petechial rash and/or stiff neck, nausea, vomiting, abdominal pain, diarrhea, and sore throat may also occur.


Classification level: Disorder
  • Synonym(s):
    • American mountain fever
    • Colorado tick encephalitis
    • Colorado tick-borne disease
    • Mountain fever
    • Mountain tick fever
  • Prevalence: Unknown
  • Inheritance: Not applicable 
  • Age of onset: All ages
  • ICD-10: A93.2
  • OMIM: -
  • UMLS: C0009400
  • MeSH: D003121
  • GARD: -
  • MedDRA: 10010022

Detailed information


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