Title: Criteria for Dengue Hemorrhagic Fever<br/>Author: Jon Mark Hirshon<br/><a href='http://umem.org/profiles/faculty/96/'>[Click to email author]</a><hr/><p>
        What are the criteria for dengue hemorrhagic fever?</p>
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                Fever lasting 2-7 days
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                                May be biphasic</li>
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                Hemorrhagic tendencies
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                                Positive tourniquet (aka Rumpel-Leede) test</li>
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                                Petechiae, ecchymosis or purpura</li>
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                                GI bleeding</li>
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                Thrombocytopenia (<100,000/mm³)</li>
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                Evidence of plasma leakage
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                                Increase in hematocrit >20% above age/sex normal</li>
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                                Decrease in hematocrit >20% after volume replacement</li>
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                                Signs of plasma leakage
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                                                e.g. pleural effusions, ascites, hypoproteinemia</li>
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<fieldset><legend>References</legend>

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        <a href="http://www.cdc.gov/dengue/clinicalLab/caseDef.html">http://www.cdc.gov/dengue/clinicalLab/caseDef.html</a></p>
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