Medically reviewed by the HealthClino Medical Review Team. Last updated: July 30, 2026. This article is for general information only and does not replace personalized medical advice — see the disclaimer at the end.

If someone is confused, has hot dry skin, is having seizures, or has lost consciousness during a heatwave, call emergency services immediately. Don't wait for or rely on a virtual consultation — online care isn't built for emergencies. Keep reading for the full picture of when it is the right call.

A woman in her 70s in Madrid spent two days last summer feeling "just a bit off" before anyone thought to call her doctor. By the time her family did, she was mildly confused and ended up in hospital for heat exhaustion that had quietly become something worse.

Doctors on our platform see versions of this story every heatwave season. It's rarely dramatic. Usually it's just someone getting a little more tired each day, drinking less water than they realize, and explaining away symptoms right up until they can't anymore.

This kind of thing keeps happening across Europe every summer, and 2026 has been rough. June brought a record-breaking heatwave across France, Spain, Germany, and the UK, and by late July the situation had morphed into what's now being called Western Europe's worst wildfire season in decades:

• France, Spain, Portugal, Italy, and Greece are all fighting major fires on top of renewed extreme heat
• Spain declared its first-ever national wildfire emergency around Madrid
• France has been battling its most severe wildfire in the Gironde region in living memory
• The UK is going through its longest dry spell since the mid-1990s

That's where extreme heat and online doctor consultations actually come together, and it's a gap most public health coverage doesn't touch. Bodies like the World Health Organization (WHO) Regional Office for Europe and national medical associations are doing important work at the policy level — pushing for heat-health action plans, hospital readiness, coordinated warnings. But none of that answers the question people actually have on a 38°C afternoon: is what I'm feeling right now serious, and what am I supposed to do about it?

That's what this guide covers — how to recognize heat-related illness, and where virtual care genuinely fits in (and where it doesn't).

Why Extreme Heat Is Now a Serious Health Concern in Europe

Europe is heating up faster than the global average, and it's showing up in the mortality numbers, not just the headlines. Recent summers have brought tens of thousands of estimated heat-related deaths across the continent, with older adults consistently bearing the worst of it — something the WHO Regional Office for Europe has flagged repeatedly in its seasonal surveillance reports.

During peak heatwave periods, some cities see emergency medical calls jump by as much as half. Hospitals fill up fast enough that ambulance response times slow down for everyone, heat-related or not.

This year has shown how quickly that plays out:

• Spain heatwave conditions that began in late May broke national springtime records almost immediately
• By the peak of summer, excess-mortality monitoring had recorded well over 10,000 heat-associated deaths across the continent, with Germany and France among the hardest hit, and Belgium and Spain not far behind
• The France heatwave made June the country's hottest since the early 2000s, with hospital admissions climbing right alongside the temperatures
• Portugal heatwave conditions passed 40°C in some regions as early as May
• By late July, an Italian heatwave combined with wildfires was pushing emergency services in several regions to their limit

By late July, in Spain and France especially, the heat had merged with fire into one compounding crisis. Spain declared its first-ever national wildfire emergency as fires raged through the Ávila and Toledo regions west of Madrid, forcing hundreds of thousands of evacuations. In France, the Gironde region fire near Bordeaux became one of the largest the country has fought in decades, with its own wave of evacuations straining hospitals and emergency crews on both sides of the border.

That combination is exactly why hospitals struggle so much during a heatwave — it's not just heatstroke and dehydration walking through the door, but smoke-related breathing problems, evacuation care, and cardiovascular emergencies, often all at once. It's part of why organizations like the European Commission's eHealth network have pushed harder in recent years for digital health infrastructure that can flex across borders during exactly this kind of emergence.

More than half of European countries still don't have a formal heat-health action plan, according to recent WHO assessments. That's being worked on at a systems level. But while it gets built, people still have to make real decisions in the moment — about themselves, their kids, their elderly parents — and figure out whether today's headache and fatigue is nothing or something worth acting on.

Here's what most coverage misses: for a lot of heat-related symptoms, the choice isn't between ignoring them and heading to an overwhelmed ER. An online doctor consultation sits in between — appropriate for a fair share of what people actually experience during a heatwave, although it's never a stand-in for emergency care when that's what's needed.

Heat Exhaustion vs. Heatstroke: How to Tell the Difference

Getting this distinction right matters more than almost anything else in this article, because it determines what happens next. Recognizing heatwave symptoms early is what you decide whether you need rest and fluids, a quick online consultation, or an ambulance. It's also the first thing any doctor — online or in person — tries to work out in the first minute of talking to you, because everything else follows from it.

Heat Exhaustion Heatstroke Skin Cool, pale, clammy Hot, dry or flushed (sweating may have stopped) Sweating Heavy sweating Sweating may stop entirely Mental state Alert, maybe tired or irritable Confusion, disorientation, slurred speech Pulse Fast but weak Fast and strong Body temperature Elevated but usually below 40°C Above 40°C (104°F) Other symptoms Nausea, headache, heat cramps, weakness Seizures, loss of consciousness What to do Rest, cool down, hydrate — consider a virtual consultation if symptoms persist Call emergency services immediately

Heat exhaustion is your body's early warning system doing its job. It's uncomfortable, it needs attention, but it's usually something you can manage with rest, fluids, and cooling down — and it's a good example of when getting quick medical guidance without leaving the house in 38°C heat actually makes sense.

Heat cramps are often one of the first signs something's wrong. These are muscle spasms, usually in the legs or abdomen, that show up after a lot of sweating — a sign your body's losing salt and fluids faster than you're putting them back.

Heatstroke is a different animal entirely. It means your body has lost the ability to regulate its own temperature, and that's a genuine emergency — the kind where minutes matter and a video call simply isn't the right tool. No online platform, ours included, can safely assess or manage suspected heatstroke remotely. It needs hands-on examination, rapid physical cooling, and monitoring only emergency services can provide.

If someone shows confusion, hot dry skin, seizures, or loses consciousness, call your local emergency number right away.

Here's a case that shows where the line actually sits: a 45-year-old who's been gardening feels dizzy and nauseous but is still alert, sweating heavily, and talking normally — that's reasonable ground for a virtual consultation. That same person an hour later, confused about what day it is and no longer sweating? That's not a booking, that's a 999 or 112 call.

If your heat exhaustion symptoms aren't easing up with rest and fluids, our quick servicespage shows what's available for same-day consultations.

Who Is Most at Risk During Extreme Heat?

Heat doesn't hit everyone the same way, and knowing why matters as much as knowing who.

Older adults (65+). Elderly heat risk tops the list every year — the body's ability to sense temperature swings and sweat efficiently just declines with age. Add in a higher chance of being on medications that interfere with heat regulation, and it's not surprising this group makes up a disproportionate share of heat-related hospital admissions across Europe, a pattern both the WHO and bodies like the NHS have flagged in their seasonal heat-health guidance.

Infants and young children. Kids dehydrate faster than adults relative to their size, and younger ones often can't tell you they're overheating — they just get fussy, sleepy, or unusually quiet, which is easy for a parent to miss in the moment.

Pregnant individuals. Pregnancy already puts extra strain on the cardiovascular system, and heat piles more on top of that, raising the risk of dehydration for both parents and baby. Anyone pregnant with heat symptoms beyond mild discomfort is better off getting checked by a doctor than trying to ride it out.

People with chronic conditions. Cardiovascular disease, diabetes, kidney disease, respiratory conditions — all of these shrink the body's margin for handling heat stress. The heart has to work harder to cool the body down, and that's a real problem when it's already under strain, which is part of why cardiovascular risk climbs so sharply in this group during a heatwave.

People on certain medications. This one surprises a lot of people. Diuretics increase fluid loss. Beta-blockers blunt the heart-rate response your body normally relies on to cope with heat. Some antihistamines and antidepressants reduce how much you sweat. None of this means stopping or changing your medication on your own — it means it's worth talking to a doctor about what to watch for, ideally before a heatwave hits rather than in the middle of one. A doctor going through this with you will look at your current diagnosis, dosage, and history rather than hand you generic advice, which is really the whole point of having that conversation with a person instead of reading a general guide. If you're on regular medication and unsure how it plays with heat, a general practitioner online consultation can talk it through with you.

Outdoor workers and people without reliable access to cooling. Physical exertion in direct heat, combined with limited access to air conditioning or shade, remains one of the most consistent risk factors in European heat-mortality data — and often one of the most preventable ones, with basic precautions.

When an Online Doctor Consultation Can Help During a Heatwave

This is where virtual care genuinely earns its place, rather than just being a "book with us" pitch tacked onto a symptom list. In each case below, a doctor still has to assess your specific symptoms and history — these are examples of what that can look like, not a substitute for the current conversation.

Mild-to-moderate dehydration. Thirst, fatigue, mild headache, dizziness, maybe a bit of light-headedness that improves somewhat with rest and fluids but won't fully go away — this is exactly the kind of thing a doctor can assess over video, ask the right follow-up questions about, and tell you whether you need more than rest and water. Someone who's felt mildly unwell for a day, is still eating and drinking normally, alert, without chest pain or breathing trouble, is a fairly typical case for a virtual doctor to evaluate. Worth knowing too: heavy fluid loss in extreme heat can cause an electrolyte imbalance , not just plain dehydration — which is part of why water alone doesn't always fix how you feel, and why getting an actual opinion beats guessing.

Heat rash or skin irritation. Prickly heat from prolonged sweating is uncomfortable, rarely dangerous, and easy enough to show a doctor on a video call for reassurance or treatment advice.

Medication timing questions. Wondering whether your usual medication schedule needs adjusting during an unusually hot stretch is exactly the sort of thing a general practitioner online can sort out quickly, without a trip to the waiting room. It's also one of the most common reasons people book an urgent online doctor visit mid-heatwave rather than waiting for their next scheduled appointment.

Reassurance when you're not sure how serious it is. Plenty of people don't want to "bother" a doctor over something that turns out to be nothing, and end up either ignoring a real problem or piling into an ER for something minor. A quick virtual consultation solves both problems at once — an actual clinical opinion in minutes, and one less unnecessary ER visit at a time when emergency departments are already under pressure.

Follow-up after a mild heat-related episode. Had a scare — felt faint, had to lie down, missed a day of work? A follow-up consultation can confirm you've actually recovered and issue a sick note if your employer needs one.

Worth being upfront about the limits, too. A telehealth doctor can't run blood tests, take your blood pressure directly, or examine you physically — everything they work with comes from what you describe and what's visible on camera.

If something doesn't add up, or needs a level of investigation a video call just can't offer, a good doctor will say so and point you elsewhere — a pharmacy, your regular GP, an in-person clinic, or emergency services, depending on what fits. Doctors on our platform practice within the medical regulations of wherever they're licensed, and like any physician, are expected to decline to prescribe or treat when it isn't clinically appropriate. Patient safety comes before finishing the appointment.

Not sure if what you're feeling is serious? Book a quick online consultation and get a clear answer before it gets worse.

You can check current availability and book through our book appointment page, or browse our doctors first if you'd rather see who's available.

When to Skip Online Care and Seek Emergency Help Immediately

To be blunt about it: some symptoms simply aren't a "let's book a video call" situation, and no online consultation service — this one included — is set up or licensed to handle them.

• Body temperature above 40°C (104°F)
• Confusion, disorientation, or slurred speech
• Hot, dry skin with sweating that has stopped
• A rapid, strong heartbeat combined with any of the above
• Seizures or loss of consciousness

Seeing any of these — in yourself, a family member, or a stranger on the street — means calling your local emergency number, full stop. Don't try to book a consultation instead, don't wait it out, and don't drive someone to the hospital yourself if they're deteriorating quickly. This is exactly what emergency services exist for, and with heatstroke, every minute truly counts.

Practical Heat-Safety Tips for High-Risk Groups

A handful of habits make a real difference, and none of them need special equipment. Most of these lines up with the seasonal heat-safety guidance published by the WHO, the NHS, and national health authorities across France, Spain, Germany, and Italy — general good practice rather than a replacement for personal medical advice.

Drink water before you're thirsty. By the time thirst kicks in, you're already mildly dehydrated. Skip the alcohol, caffeine, and sugary drinks during peak heat — they don't help.

Manage your home's temperature actively. Close the blinds and curtains during the day to keep heat out, then open windows at night once it's cooler outside than in. This one habit alone makes a real difference if you don't have air conditioning, which is still most homes in northern Europe.

Avoid outdoor activity during peak hours. Late morning through mid-afternoon is usually when heat and UV exposure hit hardest — shift errands, exercise, or outdoor work earlier or later where you can, and lean toward cooling down indoors instead of pushing through the worst of it.

Check on people who live alone. A two-minute phone call to an elderly neighbor or relative genuinely saves lives during a heatwave. Plenty of heat deaths involved someone isolated, whose symptoms simply went unnoticed until it was too late.

Dress for the heat, not out of habit. Light, loose, breathable clothing helps your body regulate temperature far better than whatever you'd normally reach for, and it also cuts down the risk of heat rash , one of the most common complaints during a long hot spell.

Know your medication risks before summer starts, not during a heatwave. If you're on regular medication and haven't talked about heat sensitivity through with a doctor, it's worth doing before the next one hits rather than in the middle of it. Our offers and packages page has options for a quick seasonal check-in if you'd rather get ahead of it.

If you want a broader sense of how virtual consultations actually work — what to expect, how prescriptions and documentation get handled — our guide on online doctor consultations walks through the process, and our telemedicine overview covers the bigger picture of how virtual care fits into everyday healthcare.

Frequently Asked Questions

Can an online doctor diagnose heatstroke? No. Heatstroke needs immediate in-person assessment and treatment, including rapid cooling and monitoring that simply can't happen over video. If heatstroke is suspected, call emergency services right away instead of booking a consultation.

Should I go to the ER or book an online consultation for heat exhaustion? If symptoms are mild — fatigue, mild headache, thirst — and you're alert and responsive, a virtual consultation is often a reasonable choice and can help you figure out if you need more care. If things are getting worse, or you're just not sure, err on the side of caution and go in person. When in doubt, the doctor you speak with will read toward caution too, and refer you onward rather than guess.

Can a virtual doctor adjust my medication during a heatwave? An online GP can go through your medications with you and advise on timing, hydration, or warning signs to watch for, but any actual dosage change needs to go through your prescribing doctor rather than being adjusted based on general advice. Doctors are bound by the prescribing rules of wherever they're licensed, and won't issue or change a prescription without clinical justification.

Are children and elderly people more at risk from extreme heat? Yes. Children dehydrate faster relative to their size and don't always communicate discomfort clearly, while older adults tend to have a reduced ability to regulate body temperature and are more likely to be on medications that raise heat sensitivity.

Can telemedicine diagnose heat exhaustion? Not in the formal sense an in-person exam allows, but a doctor can assess your symptoms over video, gauge how likely it is to be heat exhaustion versus something else, and give you a clear answer on whether you need further care — which is often what people actually need at the moment. That kind of assessment is provisional by nature, based on what you report, so the doctor may still suggest an in-person follow-up if something doesn't quite fit.

How quickly can I get an online doctor consultation during a heatwave? For non-emergency heat symptoms, most urgent consultations connect you with a doctor within minutes to a couple of hours. Check our quick services page for current availability.

Is my health information kept private during an online consultation? Yes. Consultations run through a secure platform, and your data is handled in line with GDPR and applicable national healthcare privacy rules. Our privacy policy covers exactly how your information is collected and used.

Got a question we haven't covered? Our full FAQs page goes further, or reach out directly via contact us .

Stay Prepared This Summer — Book a Consultation Before the Next Heatwave

It really comes down to three things: knowing the difference between heat exhaustion and heatstroke, knowing your own risk factors (age, medication, chronic conditions), and knowing when virtual care is truly the right call versus when it's time to call emergency services without a second thought. When it comes to extreme heat and online doctor consultations, the point was never to replace emergency care — it's to fill the space between doing nothing and overwhelming an ER, with a current clinical opinion either way.

Don't wait for the next heatwave to hit — book your online doctor consultation today and get a clear, medically grounded answer.

Want to have a look around first? Browse our doctors , check offers and packages for seasonal check-ins, or read more about our approach on about us . Physicians interested in joining our network can find details on joining as a doctor .

---

Medical disclaimer: This article is provided for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Every clinical decision — whether a symptom warrants an online consultation, an in-person visit, or emergency care — depends on individual assessment by a qualified doctor. Online consultations are not suitable for medical emergencies, including suspected heatstroke; If you think you may have a medical emergency, call your local emergency number immediately. Doctors providing consultations through this platform are licensed and regulated professionals who practice in line with the medical and prescribing regulations of their country of licensure, and may decline to provide treatment, a referral, or a prescription where it isn't clinically appropriate. Never disregard professional medical advice or delay seeking it because of something you've read here.

This article was medically reviewed by the HealthClino Medical Review Team on July 30, 2026 for clinical accuracy. It's reviewed periodically and updated to reflect current medical guidance and regulatory changes. Referenced sources include the World Health Organization Regional Office for Europe, the European Commission's eHealth initiatives, publicly available guidance from national health authorities on heat-related illness, and current news reporting on the 2026 European heatwave and wildfire crisis, current as of the last-updated date above. Patient data shared during consultations is handled in accordance with GDPR and applicable national healthcare privacy regulations — for full details, see our privacy policy and terms and conditions .