Dengue haemorrhagic fever is diagnosed by -
<p> Dengue hemorrhagic fever is diagnosed by acute onset of fever ,hemorrhagic manifestation (e.g.positive tourniquet test),platelet count <100,000 cells/mm3. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:250. <\p>
Acute onset of high fever, presence of petechiae, epistaxis platelet count>2 lakh
Acute onset of high fever, positive tourniquest test, epistaxis ormalena and malena and platelet count>1.5lakh
Acute onset high fever 2 to 7 days, associated with hemorrhagic manifestation e.g hemoptysis and platelet count less than 1.5lakh
Acute onset of high fever, positive tourniquet test, bleeding gum and platelet count less than 1.0lakh
Communicable diseases