Dengue fever : Symptoms & Signs, Diagnosis & Tests

Symptoms & Signs

Dengue fever begins with a sudden high fever, often as high as 104 – 105 degrees Fahrenheit.

A flat, red rash may appear over most of the body 2 – 5 days after the fever starts. A second rash, which looks like the measles, appears later in the disease. Infected people may have increased skin sensitivity and are very uncomfortable.

Other symptoms include:

  • Headache (especially behind the eyes)
  • Fatigue
  • Joint aches
  • Muscle aches
  • Nausea
  • Swollen lymph nodes
  • Vomiting

Diagnosis & Tests

Tests that may be done to diagnose this condition include:

  • Antibody titer for dengue virus types
  • Complete blood count (CBC)
  • Serology studies to look for antibodies to dengue viruses


Review Date : 8/28/2009
Reviewed By : David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and Jatin M. Vyas, MD, PhD, Instructor in Medicine, Harvard Medical School, Assistant in Medicine, Division of Infectious Disease, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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