Noida Doctor Debunks Heatwave Myths, Explains Safe Ways To Beat Extreme Heat

As large parts of north India continue to grapple with an intense heatwave and temperatures exceeding 40 degrees Celsius, medical experts are warning that prolonged exposure to extreme heat can quickly escalate from discomfort to a potentially life-threatening emergency. With daytime temperatures remaining high and limited relief during evenings, the risk of heat-related illnesses has increased significantly across the region.

In this week's HT Health Talk, Dr Santosh Pandey, Consultant in Emergency Medicine and Trauma Care at Medanta, Noida, highlighted the critical differences between heat exhaustion and heatstroke, conditions that are often mistakenly treated as the same. According to the specialist, while both are caused by excessive heat exposure, heatstroke represents a far more dangerous medical emergency requiring immediate intervention.

Dr Pandey explained that heat exhaustion typically presents with symptoms such as excessive sweating, weakness, dizziness, headache, nausea, muscle cramps and a rapid heartbeat. Individuals suffering from heat exhaustion generally remain conscious, alert and able to respond normally. The condition occurs when the body struggles to regulate temperature and loses excessive fluids and electrolytes through sweating.

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Heatstroke, however, develops when the body's core temperature rises to dangerous levels, usually above 40 degrees Celsius, causing the body's cooling mechanisms to fail. At this stage, the brain and other vital organs can begin to malfunction. Warning signs include confusion, disorientation, slurred speech, unusual behaviour, seizures, loss of consciousness or an inability to respond appropriately. These neurological symptoms distinguish heatstroke from heat exhaustion and signal a medical emergency.

The doctor stressed that bystanders and family members should act immediately if they suspect heatstroke. Anyone who becomes confused, unresponsive or displays altered mental status following prolonged exposure to heat should be moved to a cooler environment while emergency medical services are contacted. Delays in treatment can increase the risk of organ damage and other serious complications.

As heatwave conditions persist across northern India, health experts are urging people to stay hydrated, avoid prolonged outdoor exposure during peak afternoon hours and recognise early warning signs of heat-related illnesses. Understanding the difference between heat exhaustion and heatstroke, Dr Pandey noted, can be crucial in preventing severe outcomes and potentially saving lives during periods of extreme heat.

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