What are the criteria required to diagnose a case of severe dengue (dengue hemorrhagic fever)?

Updated: May 03, 2019
  • Author: Darvin Scott Smith, MD, MSc, DTM&H; Chief Editor: Michael Stuart Bronze, MD  more...
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Criteria for the diagnosis of severe dengue include a probable or confirmed case of dengue infection and hemorrhagic tendencies as evidenced by one or more of the following:

  • A positive result from the tourniquet test
  • Petechiae, ecchymoses, or purpura
  • Bleeding from the mucosa, gastrointestinal tract, injection sites, or other sites
  • Hematemesis or melena and thrombocytopenia (< 100,000 cells/μL)
  • Evidence of plasma leakage due to increased vascular permeability

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