
Sconfiggi il caldo: la tua guida essenziale per la sicurezza al sole
Revisione paritaria di Dr Colin Tidy, MRCGPAutore Victoria RawPubblicato originariamente 20 Maggio 2026
Rispetta le linee guida editoriali
- ScaricaScarica
- Condividi
- Language
- Discussione
- Versione audio
- Aggiungi alle fonti preferite su Google
With warmer weather expected to continue across the UK in the coming months, St John Ambulance has shared important health advice to help people recognise the symptoms of common heat-related conditions and understand how to treat them.
Knowing these essential tips can keep you safe, prepared, and ready to make the most of your summer.
Believe it or not, the UK does occasionally enjoy spells of sunshine in between the rain, grey skies, and chilly temperatures we’ve all become so accustomed to. Because hot weather can arrive quite suddenly, many of us are often caught unprepared for the change.
While keeping a selection of coats on standby may feel essential, St John Ambulance is encouraging people to be just as prepared for their health. Their first aid tips can help you stay safe during periods of hot weather and avoid common heat-related illnesses.
Sunburn symptoms, risks - and how to treat it safely
Sunburn is often brushed off as an unfortunate side effect of spending a little too long in the sun. While mild sunburn may seem harmless, it can actually cause serious damage to your body. Not only can repeated sunburn increase your chance of developing skin cancer in later life, but it can also have more immediate effects.
Secondo St John Ambulance, the short-term effects of sunburn can include heat exhaustion, painful skin inflammation, and dehydration - all of which can become serious if left untreated.
The charity emphasises the importance of limiting your exposure to the sun and protecting yourself by wearing long, loose-fitting clothing, staying in the shade, and regularly applying a high-factor sunscreen.
St John Ambulance highlights the main symptoms of sunburn as:
Reddened skin - which may become intensely red or “lobster red”.
Pain or tenderness in the affected area.
Blistering - in more severe cases.
If you - or someone else - experiences symptoms of sunburn, there are several things you can do at home to help reduce the effects and prevent the condition from worsening.
The recommended treatments for sunburn include:
Moving immediately out of direct sunlight and into the shade.
Covering the skin with light, loose-fitting clothing.
Sipping cold water to stay hydrated.
Cooling the skin with cool water for at least 10 minutes.
Applying calamine lotion to help soothe a mild sunburn.
If blisters develop, it is best to seek advice from a healthcare professional for more targeted treatment. It is also important to monitor for symptoms of heat exhaustion or heatstroke and seek medical help if needed.
Dehydration signs to spot and simple ways to treat it
Your body can become dehydrated if it does not get the fluids it needs to function properly. Even if you normally drink enough water during the day, hotter weather can cause you to sweat and pee (urinate) more than usual, meaning your body loses fluid much faster.
If you do not keep your hydration levels topped up during warm weather, dehydration can quickly develop and may lead to serious health issues.
St John Ambulance recommends sipping water regularly throughout the day in hotter climates - whether you are at home or abroad - to help prevent dehydration.
The charity says you should look out for certain symptoms that may indicate dehydration, including:
Headaches and light-headedness.
A dry mouth, eyes, and lips.
Passing only small amounts of dark pee.
Crampi muscolari.
There are steps you can take to help reduce the effects of dehydration and prevent the condition from worsening. These can be used for yourself, but if you notice someone else showing symptoms, it’s important to act quickly.
The recommended treatments for dehydration include:
Moving out of the sun and into the shade.
Helping the person to sit down and giving them plenty of water to drink.
Providing an oral rehydration solution, which helps replace lost salts and other minerals - these can be bought in sachets from any pharmacy.
Advising rest and gently stretching or massaging any muscles affected by cramps.
Continuing to monitor how they are feeling - if symptoms persist after rehydration, encourage them to seek medical advice.
If left untreated, dehydration can develop into heat exhaustion, which is more serious, so it is important to rehydrate as soon as possible.
Heat exhaustion warning signs and how to respond quickly
Spending extended periods in the sun can feel refreshing after a long winter. While a little sunlight is good for us, too much exposure can lead to heat exhaustion.
Heat exhaustion occurs when you are exposed to excessive heat, and your body works overtime to keep a safe internal temperature. When this happens, you may begin to feel unwell, and in more serious cases, it can progress to heatstroke.
St John Ambulance explains that heat exhaustion is caused by a loss of salt and water from the body, usually through excessive sweating. It can develop gradually without you noticing, particularly if you are not used to hot or humid weather.
The typical symptoms of heat exhaustion are:
Mal di testa.
Dizziness and confusion.
Loss of appetite and feeling sick.
Sweating with pale, clammy skin.
Cramps in the arms, legs, and stomach.
A fast, weakening pulse and breathing.
If someone is showing signs of heat exhaustion, the charity recommends you:
Move them out of the sun and into the shade.
Help them lie down in a cool place and raise their legs slightly.
Give them plenty of water to drink - or an isotonic sports drink.
Check their breathing, pulse, and level of responsiveness.
Heatstroke symptoms to recognise and emergency treatment steps
Heatstroke is a medical emergency in which your body’s temperature-regulating system fails, causing your core temperature to rise above 40°C.
St John Ambulance says you may suspect someone is experiencing heatstroke during hot weather if they become unwell, their behaviour changes, or they show signs of reduced consciousness.
They explain that the signs and symptoms of heatstroke include:
Rapid deterioration in responsiveness - including behavioural changes such as agitation or aggression, and being sick (vomiting).
Delirio - stumbling gait, and hot skin that is often flushed or red.
Convulsioni - a rapid pulse and fast breathing, and sometimes loss of bladder or bowel control.
Coma or collapse - with a core temperature usually above 40°C.
St John Ambulance recommends the following immediate first aid steps for heatstroke:
Shade - move them out of the sun or away from the heat source.
Strip - remove excess clothing, ideally down to underwear.
Spray - mist or pour cool water over the body.
Fan - fan them to encourage cooling through evaporation.
Heatstroke can be life-threatening. The charity stresses that you should call 999 immediately if someone shows signs of heatstroke. If they become unresponsive, check their breathing straight away.
Mark Butler, Associate Clinical Director of St John Ambulance, says that a few simple precautions can make a big difference in staying safe while still enjoying the sunshine.
He explains that staying well hydrated, keeping to the shade during the hottest part of the day, and regularly applying a high-factor sunscreen are all easy ways to reduce your chance of heat-related illness. He also recommends wearing a cap or sunhat when out in the sun.
“It’s especially important to look out for those more at risk, including young children and older people, as even a small rise in body temperature can quickly become serious,” he concludes. “Checking in on family, friends, and neighbours can help ensure everyone stays well.”
Scelte del paziente per Condizioni ambientali

Salute del cuore e dei vasi sanguigni
Quando il caldo aumenta, aumentano anche i rischi per il cuore: Cosa devi sapere
Le ondate di calore e le alte temperature comportano rischi per la salute. L'American Heart Association (AHA) ha emesso avvertimenti sull'importanza di prendere precauzioni extra per rimanere al sicuro in caso di alte temperature. Scopri come aiutarti a rimanere fresco e in salute qui.
di Lawrence Higgins

Salute generale e stile di vita
Come dormire meglio al caldo
Può sembrare impossibile dormire bene quando fa caldo. Non riesci a trovare una posizione comoda quando hai troppo caldo, il che può farti sentire ancora più stanco e letargico il giorno successivo. Quindi, come puoi dormire meglio quando la temperatura sale?
di Lawrence Higgins
Domande frequenti
What is the difference between heat exhaustion and heatstroke?
Heat exhaustion occurs when your body works hard to cool itself, leading to a loss of salt and water, usually through excessive sweating. It can make you feel unwell, but your body's temperature regulation system is still functioning. Heatstroke, however, is a medical emergency where your body's temperature-regulating system fails completely, causing your core temperature to rise above 40°C. Heatstroke is more severe and can be life-threatening.
Are there specific groups of people who are more vulnerable to heat-related illnesses?
Yes, it's particularly important to look out for young children and older people, as they are more at risk. Even a small rise in their body temperature can quickly become serious for these groups.
Does drinking water help treat sunburn?
Sipping cold water to stay hydrated is recommended as part of the treatment for sunburn. This helps your body recover and generally maintain hydration, which is important when dealing with any heat-related issue.
When should I call for emergency medical help for heat-related illnesses?
You should call 999 immediately if someone shows signs of heatstroke. If they become unresponsive, check their breathing straight away. For dehydration, if symptoms persist after rehydration measures, they should seek medical advice. For sunburn, if blisters develop or if symptoms of heat exhaustion or heatstroke appear, medical help is needed.
Can I use an isotonic sports drink to help with dehydration, or is water always best?
For dehydration, an oral rehydration solution, which replaces lost salts and minerals, is specifically recommended. For heat exhaustion, you can give plenty of water to drink, or an isotonic sports drink. Both can help replenish fluids and electrolytes lost through sweating.
Informazioni sull'autoreVisualizza il profilo completo

Victoria Raw
Scrittore di Articoli
Laurea in Lettere (Hons), Letteratura Inglese
Victoria è una scrittrice di contenuti per Patient i cui interessi speciali si concentrano sul benessere mentale, le tendenze sociali e l'impatto della tecnologia sulla nostra salute.
Victoria ha collaborato con varie associazioni benefiche nel corso della sua carriera, tra cui Ovarian Cancer Action, Scleroderma and Raynaud's UK, St John Ambulance, Andy's Man Club, la RSPCA e Barnardo's. Ha anche lavorato con importanti marchi al dettaglio come Marks and Spencer, Tesco e Morrisons, oltre a giganti dell'intrattenimento come Disney e Warner Bros.
Informazioni sul recensoreVisualizza il profilo completo

Dr Colin Tidy, MRCGP
Medico di base, Autore medico
MBBS, MRCGP, MRCP (Paediatrics), DCH
Il Dr Colin Tidy è un medico del NHS, con sede nell'Oxfordshire.
Storia dell'articolo
Le informazioni su questa pagina sono revisionate da clinici qualificati.
Articolo disponibile anche in Inglese, Tedesco, Spagnolo, Francese, Italiano, Portoghese, Hindi, Ebraico, Arabo, and Svedese.
Next review due: 20 May 2029
20 Maggio 2026 | Pubblicato originariamente
Autore:
Victoria RawRevisione paritaria di
Dr Colin Tidy, MRCGP

Chiedi, condividi, connettiti.
Esplora le discussioni, fai domande e condividi esperienze su centinaia di argomenti di salute.

Non ti senti bene?
Valuta i tuoi sintomi online gratuitamente
Iscriviti alla newsletter di Patient
La tua dose settimanale di consigli sulla salute chiari e affidabili - scritti per aiutarti a sentirti informato, sicuro e in controllo.
Abbonandoti accetti i nostri Informativa sulla Privacy. Puoi annullare l'iscrizione in qualsiasi momento. Non vendiamo mai i tuoi dati.
Di più sulla salute generale e lo stile di vita
- 5 benefits of bees for your health
- Ti stai lavando le mani correttamente?
- Opzioni per la prevenzione dell'ictus da fibrillazione atriale
- Una scrivania in piedi può davvero aiutare con il mal di schiena?
- Come aumentare i livelli di energia e sentirsi meno stanchi in inverno
- Come aumentare i livelli di motivazione durante l'inverno
- Come affrontare l'asma in estate
- Come gestire l'asma durante i mesi invernali
- Come aiutare i tuoi bambini a mangiare sano durante il Natale
- Come dormire meglio al caldo
- Come la tua altezza influisce sulla tua salute
- Propositi per il nuovo anno: come adottare uno stile di vita ecologico
- L'NHS apre cliniche senza appuntamento per le sopravvissute a MGF
- I periodi dolorosi costano alle donne nove giorni di produttività ogni anno
- NuovoOrgoglio, appartenenza e perché la salute riguarda più della sola assistenza sanitaria
- La primavera è nell'aria, ma i virus invernali sono ancora in giro
- Che cos'è un certificato di idoneità e quando ne hai bisogno?
- Qual è il panino natalizio più salutare della strada principale?
- Qual è il legame tra i rilassanti per capelli e i fibromi?