Every summer, as Haryana crosses 44°C, hospitals across the state receive patients whose family members say the same thing: "We thought he just needed rest." Knowing heat stroke symptoms - and how they differ from ordinary heat exhaustion - can genuinely save a life, because the window for action is short. This guide from our internal medicine team in Sonipat explains the difference between the two, the first aid that matters in the first ten minutes, and when to head straight for emergency care.
Why extreme heat overwhelms the body
Your body runs at around 37°C and works constantly to stay there, mainly by sweating. In a Haryana loo - dry, scorching wind at 45°C - sweat evaporates faster than the body can replace fluid. As water and salt run low, the cooling system begins to fail. Body temperature creeps up, and organs that tolerate heat poorly, especially the brain, kidneys and heart, come under strain.
Heat illness is a spectrum. It starts with heat cramps, progresses to heat exhaustion, and can end in heat stroke, a true medical emergency with a real risk of death. The whole journey can take a few hours - or, in the wrong conditions, less than one.
Heat exhaustion: the body's warning stage
Heat exhaustion is the body pleading for help while its cooling system still works. The signs: heavy sweating with cool, clammy, pale skin; intense thirst and weakness; headache and dizziness, especially on standing; nausea or vomiting; muscle cramps in the legs or abdomen; and a fast but weak pulse. The person is uncomfortable and drained, but crucially, they are alert and make sense when they talk.
Treated promptly - shade, fluids, rest - heat exhaustion settles within a few hours. Ignored, and especially if the person keeps working in the sun, it can tip into heat stroke.
Heat stroke symptoms: the emergency
Heat stroke means the cooling system has failed and body temperature is rising unchecked, typically beyond 40°C. The heat stroke symptoms every family should recognise:
Hot, red, dry skin. In classic heat stroke the sweating stops - the skin feels burning hot and dry to the touch. This is the single most alarming switch from heat exhaustion.
Confusion and strange behaviour. The overheated brain malfunctions: the person becomes disoriented, agitated, slurs words, cannot answer simple questions, or behaves oddly. Any mental change in a person exposed to heat is heat stroke until proven otherwise.
A pounding, rapid pulse, throbbing headache, and sometimes fits (seizures) or collapse into unconsciousness.
The difference is easy to remember: heat exhaustion sweats and complains; heat stroke stops sweating and stops making sense. The moment the mind is affected, you are no longer managing a tired family member - you are in a race to the hospital.
First aid: the ten minutes that matter
If you suspect heat stroke, act on two fronts at once - cool the person and arrange transport to hospital. Move them into shade or an air-conditioned room. Remove excess clothing. Pour water over the body and fan continuously; place wet cloths or ice packs on the neck, armpits and groin, where large blood vessels run close to the skin. If they are fully conscious, give sips of cool water or ORS - never force fluids into a drowsy or confused person, as they can choke.
Two things people commonly do that do not help: paracetamol and other fever tablets do nothing for heat stroke (this is not a fever, and they may burden the liver), and wrapping the person in blankets "for weakness" actively harms. Cooling on the way to hospital is part of heat stroke treatment itself - do not wait for the hospital to begin.
Who is most at risk in our region
Outdoor workers - farmers, construction labour, rickshaw pullers, delivery riders - face the highest risk, especially between noon and 4 PM. The elderly are vulnerable because ageing blunts thirst and sweating; many older people with heart or blood pressure medicines are also more easily dehydrated. Small children, people with diabetes or heart disease, and anyone recovering from illness sit in the danger zone too. Even healthy young people get heat stroke when exertion meets peak heat - a cricket match at 3 PM in June is a genuine risk.
Dehydration in these same weeks quietly drives other problems as well - it is a big part of why kidney stones spike in summer across Haryana.
Keeping your family safe through peak summer
The basics work: drink water regularly through the day, not just when thirsty; keep ORS and nimbu paani-style fluids handy for anyone working outside; schedule heavy outdoor work before 11 AM or after 5 PM; wear light, loose cotton and cover the head outdoors; never leave a child, elderly person or pet in a parked car, even briefly; and check on elderly relatives living alone during heat waves - a phone call at noon can catch trouble early. When the season turns, a different set of risks arrives with the rains, and we cover preparing your family for the monsoon separately.
Emergency care at Memorial Hospital, Sonipat
Suspected heat stroke needs an emergency hospital in Sonipat that can act immediately - and this is exactly what Memorial Hospital's 24×7 emergency department is built for. Active cooling, IV fluids, and continuous monitoring of temperature, blood pressure and kidney function begin on arrival, with ICU support and ventilators available for the severest cases, and in-house laboratory testing to track organ recovery.
Care is led by our critical care and internal medicine team, including Dr. Sameer Mehta, MBBS, MD, whose OPD also runs daily (11 AM to 2 PM, plus 6 to 7 PM Monday to Saturday) for non-emergency summer complaints - persistent weakness, dizziness, low urine output or blood pressure concerns in the heat.
Frequently asked questions
How do I tell heat stroke from heat exhaustion?
Two switches mark the emergency: the skin and the mind. Heat exhaustion has heavy sweating with cool, clammy skin and a person who is alert. In heat stroke the skin turns hot, red and dry, and the person becomes confused, drowsy or stops making sense. Confusion plus heat means hospital, immediately.
What is the first aid for heat stroke at home?
Move the person to shade, strip excess clothing, pour water over the body, fan them, and put wet cloths or ice on the neck, armpits and groin - while arranging transport to an emergency hospital. Give sips of water or ORS only if fully conscious. Do not give fever tablets; they do not work for heat stroke.
Can heat stroke happen indoors?
Yes. During heat waves, poorly ventilated rooms - especially top-floor rooms under a concrete roof - can stay dangerously hot through the night. The elderly, infants and people with chronic illness can develop heat stroke indoors without any sun exposure. Fans, cross-ventilation, wet-cloth cooling and regular fluids matter inside the house too.
Which emergency hospital in Sonipat treats heat stroke?
Memorial Hospital's emergency department on Delhi Road runs 24×7 with ICU backup, IV fluid and active cooling protocols, and in-house labs. In any suspected heat stroke, start cooling at home and come straight to emergency - no appointment is ever needed for an emergency.
Take the heat seriously
If someone in your family shows warning signs this summer, cool first, travel fast, and let the 24×7 emergency department take over. For non-urgent heat-related complaints - recurring dizziness, weakness or dehydration - book an OPD visit with our physicians. This article is general information and not a substitute for a consultation.
Medically reviewed by Dr. Sameer Mehta, MBBS, MD (General Medicine & Critical Care), Memorial Hospital, Sonipat.
Related specialty: General Medicine
Editorial note: This article is for general information and is not a substitute for personal medical advice. Please consult a qualified doctor about your specific symptoms. Last updated on 18 July 2026.
