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$Title{Colorado Tick Fever}
$Subject{Colorado Tick Fever Mountain Fever Mountain Tick Fever}
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Copyright (C) 1986 National Organization for Rare Disorders, Inc.

141:
Colorado Tick Fever

** IMPORTANT **
It is possible that the main title of the article (Colorado Tick Fever)
is not the name you expected.  Please check the SYNONYM listing to find the
alternate names and disorder subdivisions covered by this article.

Synonyms

     Mountain Fever
     Mountain Tick Fever

General Discussion

** REMINDER **
The information contained in the Rare Disease Database is provided for
educational purposes only.  It should not be used for diagnostic or treatment
purposes.  If you wish to obtain more information about this disorder, please
contact your personal physician and/or the agencies listed in the "Resources"
section.


Colorado Tick Fever is a viral infection transmitted by ticks prevalent
in the western United States.  Fever, headaches, muscle aches, and
generalized discomfort characterize the illness, which resolves
spontaneously.

Symptoms

Colorado Tick Fever has an abrupt onset about five days after a tick bite,
which usually occurs at moderate altitudes during spring or early summer.  The
symptoms are flu-like and may include chills, headache, increased sensitivity
to light, muscle pains (especially in the back), fatigue, nausea, vomiting,
and lack of appetite.  There may be a slight, reddish rash, and the spleen
can become enlarged.  Fever may rise sharply and require treatment.

Causes

Colorado Tick Fever is caused by a virus belonging to the arboviruses.  It is
transmitted from one patient to another by a tick known as the hard shelled
wood tick, or Dermacentor andersoni.

Therapies:  Standard

Treatment for Colorado Tick Fever is symptomatic.

Therapies:  Investigational

This disease entry is based upon medical information available through
September 1989.  Since NORD's resources are limited, it is not possible to
keep every entry in the Rare Disease Database completely current and
accurate.  Please check with the agencies listed in the Resources section for
the most current information about this disorder.

Resources

For more information on Colorado Tick Fever, please contact:

     National Organization for Rare Disorders (NORD)
     P.O. Box 8923
     New Fairfield, CT  06812-1783
     (203) 746-6518

     NIH/National Institute of Allergy and Infectious Diseases
     9000 Rockville Pike
     Bethesda, MD  20892
     (301) 496-5717

     Centers for Disease Control (CDC)
     1600 Clifton Road, N.E.
     Atlanta, GA  30333
     (404) 639-3534

References

CECIL TEXTBOOK OF MEDICINE, 18th ed.:  James B. Wyngaarden, and Lloyd H.
Smith, Jr., Eds.:  W. B. Saunders Co., 1988.  Pp. 1819-21, 2193.

THE MERCK MANUAL 15th ed:  R. Berkow, et al:  eds; Merck, Sharp & Dohme
Research Laboratories, 1987.  Pp. 166, 190.