India, April 30 -- A severe heatwave has gripped several parts of the country, with the IMD forecasting sweltering conditions across India. Adding to the concern, a recent ranking found that 19 of the world's 20 hottest cities are in India. As temperatures spike earlier in the season, experts warn that the body may struggle to adapt, increasing the risk of heat-related illnesses. Dr Mukta Agarwal, consultant in internal medicine at Manipal Hospital, says early heatwaves can have a sudden and severe impact: "While a heatwave can affect everyone, certain groups need to take special care." Common signs of heat-related illness include dizziness, fatigue, nausea, headaches, excessive sweating or unusually dry skin, and confusion. These symptoms can escalate quickly without timely care. "Stay well-hydrated, avoid stepping out during peak afternoon hours, wear light and breathable clothing, and ensure proper ventilation indoors," advises Dr Agarwal. She adds that checking on vulnerable individuals, especially the elderly and children, is crucial....