Alternative MedicinesInfectionInjuries
   Adenoviral Infections
   Chlamydial Infections
   Chronic Fatigue and Immune Dysfunction Syndrome
   Clostridium Difficile Infection
   Colorado Tick Fever
   Common Cold
   Cytomegalovirus Infection
   Ebola Virus Infection
   Escherichia Coli
   Gas Gangrene
   Genital Warts
   Haemophilus Influenzae Infection
   Hantavirus Pulmonary Syndrome
   Herpes Simplex
   Herpes Zoster
   Hookworm Disease
   Infectious Mononucleosis
   Legionnaires' Disease
   Lyme Disease
   Methicillin-Resistant Staphylococcus Aureus
   Necrotizing Fasciitis

Colorado Tick Fever

Colorado tick fever is a benign infection that occurs in the Rocky Mountain region of the United States. The infection is acquired between March and November in the mountainous western region at altitudes of 4,000' to 10,000' (1,200 to 3,000 m). Colorado tick fever apparently confers long-lasting immunity against reinfection.


This disease is limited to the western US and is most prevalent from March to September, with the highest numbers of infections occurring in May and June.

Symptoms start about 3 to 6 days after the tick bite. Symptoms of fever continue for 3 days, stop, then recur 1 to 3 days later for another few days.

Symptoms and Signs

Symptoms start about 3 to 6 days after the tick bite. Symptoms of fever continue for 3 days, stop, then come back 1 to 3 days later for another few days.

  • Sudden fever
  • Excessive sweating
  • Severe muscle aches
  • Joint stiffness
  • Headache
  • Photophobia (sensitivity to light)
  • Nausea and vomiting
  • Generalized weakness
  • Complement fixation to Colorado tick virus
  • Immunofluorescence for Colorado tick fever -- will be positive if the person has the disease
  • Diagnostic tests

    A complete blood count demonstrating leukopenia, thrombocytopenia, and serologic findings or viral isolation confirms the diagnosis. Infection of erythroblasts and other marrow cells by the fever virus causes the appearance of erythrocytes containing the virus; these are present for several weeks. This is detected in smears stained by immunofluorescence.


    After correct removal of the tick, supportive treatment relieves symptoms, combats secondary infection, and maintains fluid balance.


    When walking in tick-infested areas, tuck long pants into socks to protect the legs, and wear shoes and long-sleeved shirts. Ticks will show up on white or light colors better than dark colors, making them easier to remove from your clothing.

    Check yourself and your pets frequently. If you find ticks, remove them immediately by using a tweezers, pulling carefully and steadily. Insect repellent may be helpful.

       Pneumocystis Carinii Pneumonia
       Pseudomonas Infections
       Relapsing Fever
       Respiratory Syncytial Virus Infection
       Rocky Mountain Spotted Fever
       Roseola Infantum
       Salmonella Infection
       Scarlet Fever
       Toxic Shock Syndrome
       Vancomycin Intermittent-Resistant Staphylococcus Aureus
       Vancomycin-Resistant Enterococcus
       West Nile Encephalitis

    © All rights reserved.

    Bookmark This Page: