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General Medicine

Heat Stroke and Severe Dehydration: Summer's Silent Emergency

πŸ“… 17 August 2026 πŸ‘¨β€βš•οΈ Reviewed by Dr. Chaitanya Pilladi ⏱️ 6 min read πŸ₯ Sri Ganga Hospital, Rajahmundry
ఀెలుగులో ΰ°šΰ°¦ΰ°΅ΰ°‚ΰ°‘ΰ°Ώ →
Quick Answer

Heat stroke is a medical emergency, not just "too much sun." If someone stops sweating despite the heat, becomes confused, or loses consciousness, move them to shade, cool them with water, and call +91-8282 8989 18 immediately β€” heat stroke can be fatal within a short time if untreated.

Summers in Rajahmundry bring genuine risk of heat-related illness, and the line between "just tired from the heat" and a true emergency can be crossed quickly. Knowing the difference between dehydration, heat exhaustion, and heat stroke can save a life.

Dehydration vs Heat Exhaustion vs Heat Stroke

ConditionSignsSweatingUrgency
DehydrationThirst, dry mouth, fatigue, dark urineNormalHydrate, monitor
Heat exhaustionHeavy sweating, weakness, dizziness, nauseaHeavyCool down, hydrate, monitor closely
Heat strokeConfusion, very high body temperature, possible unconsciousnessMay stopMedical emergency β€” call immediately
Warning signs and first aid infographic for heat stroke and severe dehydration

Figure 1: Recognising the shift from ordinary heat fatigue to a genuine emergency.

Warning Signs of Heat Stroke

🚫 This is an emergency if you see

  • Body feels very hot to touch, often with little or no sweating
  • Confusion, slurred speech, or unusual behaviour
  • Rapid heartbeat
  • Dizziness, fainting, or loss of consciousness
  • Nausea or vomiting

What to Do Immediately

βœ… Do this

  1. Move the person to shade or a cool area right away.
  2. Remove excess clothing to help heat escape.
  3. Cool them with water β€” wet cloths on the skin, or gently pour cool water, while fanning them.
  4. If conscious and able to swallow, give small sips of water or ORS.
  5. Call +91-8282 8989 18 or 108 for suspected heat stroke β€” don't wait to see if they recover on their own.

What to Avoid

🚫 Don't do this

  • Don't give fluids to someone who is confused or unconscious β€” risk of choking.
  • Don't leave them alone while symptoms are present.
  • Don't assume rest alone will fix it if confusion or very high body temperature is present β€” this needs medical treatment.
"Heat stroke can escalate within an hour if not treated. The moment someone stops sweating and starts acting confused in extreme heat, that's not a 'wait and see' situation β€” get them cooling down and get them to us."
β€” Dr. Chaitanya Pilladi, Consultant Anaesthesiologist & Intensivist

When to Rush to Hospital

Any suspected heat stroke β€” confusion, very high body temperature, or loss of consciousness in the heat β€” needs immediate emergency care. Sri Ganga Hospital's emergency department is equipped 24Γ—7 to manage heat-related emergencies.

What Happens When You Arrive at Sri Ganga

Who Is at Higher Risk of Heat Stroke

Frequently Asked Questions

What is the difference between heat exhaustion and heat stroke?

Heat exhaustion causes heavy sweating, weakness, and dizziness, but the person is still sweating and alert. Heat stroke is more severe: body temperature rises dangerously high, sweating may stop, and the person can become confused or lose consciousness. Heat stroke is a medical emergency.

What should I do if someone shows signs of heat stroke?

Move them to shade or a cool area immediately, remove excess clothing, and cool them with water or wet cloths while fanning them. Call +91-8282 8989 18 or 108 right away, as heat stroke can be fatal without prompt treatment.

Should I use ice-cold water to cool someone with heat stroke?

Cool water and wet cloths with fanning are effective and safe. Avoid ice-cold immersion for very young children or elderly patients without medical guidance, as it can cause shivering that raises body temperature instead of lowering it.

Key takeaways

  • Heat stroke is a true emergency β€” different from ordinary dehydration or heat exhaustion
  • Confusion, lack of sweating, and very high body temperature are the red flags
  • Move to shade, cool with water, call for help immediately
  • Never give fluids to someone who is confused or unconscious

This guide is for general awareness and does not replace professional medical care. If you suspect heat stroke, seek emergency care immediately.

References
  1. Centers for Disease Control and Prevention (CDC). Warning Signs and Symptoms of Heat-Related Illness.
  2. National Disaster Management Authority, Government of India. Heat Wave Guidelines.
  3. World Health Organization. Heat and Health Fact Sheet.

Signs of Heat Stroke? Act Fast, Call Now

Our emergency team is available 24Γ—7 to manage heat-related emergencies. Don't wait for symptoms to worsen.

🚨 Call +91-8282 8989 18 πŸ“… Book an Appointment

Related reading: 24Γ—7 Emergency Care in Rajahmundry β€” Complete Patient Guide

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