A 25-year-old man presents with a 2-day history of fever. The document discusses the diagnosis and management of viral fevers like dengue, chikungunya, and others. It provides guidance on history taking, physical examination, investigations, and treatment of uncomplicated viral fevers as well as management of potential complications. Antibiotics are only indicated for secondary bacterial infections while supportive care with antipyretics and fluids are the mainstay of treatment. Admission is required for suspected severe illnesses or complications.