Social & Preventive Medicine Dengue haemorrhagic fever is diagnosed by- A Acute onset of high fever, presence of petechiae, epistaxis and platelet count > 2 lakh B Acute onset of high fever, positive tourniquest test, epistaxis or malena and malena and platelet count > 1.5 lakh C Acute onset of high fever 2 to 7 days, associated with hemorrhagic manifestation e.g. hemoptysis and platelet count less than 1.5 lakh D Acute onset of high fever, positive tourniquet test, bleeding gum and platelet count less than 1.0 lakh 💡 Explanation Dengue haemorrhagic fever is diagnosed by- ✓ Correct Answer: D. Acute onset of high fever, positive tourniquet test, bleeding gum and platelet count less than 1.0 lakh