Why fever needs context
A fever is a sign rather than a diagnosis. During monsoon months, mosquito-borne and other infections may circulate at the same time, and several illnesses can begin with similar symptoms. Tell the clinician when the fever started, the highest measured temperature, associated symptoms, medicines already taken, recent travel and any known mosquito exposure.
Dengue symptoms and warning signs
Government of India and WHO guidance describe common dengue symptoms such as high fever, severe headache, pain behind the eyes, muscle or joint pain, nausea, vomiting and rash. Warning signs that need urgent medical attention include severe abdominal pain, persistent vomiting, breathing difficulty, bleeding, marked weakness, restlessness or blood in vomit or stool. A fall in temperature does not always mean the risk has passed.
Medicines and hydration
If dengue is possible, do not self-select pain medicines without medical advice. WHO specifically cautions against aspirin and ibuprofen because they can increase bleeding risk in dengue. Rest and adequate fluids are important, but persistent vomiting, inability to drink, reduced alertness or other warning signs should be treated as reasons to seek medical care rather than trying to manage the illness only at home.
When to contact the clinic
Contact a doctor if fever persists, symptoms are worsening, a child or older adult is unwell, or you are unsure whether testing is needed. The clinician may decide whether a CBC, dengue test or another investigation is appropriate based on the day of illness and the clinical picture.
Sources used for this guide
Reviewed against the linked public-health sources on 2026-08-10. For personal medical advice, consult a qualified clinician.