Hot summer weather is a common trigger for acute headaches. Increased temperatures and excessive sweating are key factors contributing to headaches. Additionally, they also cause the body to become dehydrated and exhausted.
1. What Are the Symptoms of Heatstroke?
Heatstroke (also known as heat shock) is the body's response to working or studying in hot and high-temperature environments. It is a heat-related condition that commonly affects children, the elderly, and individuals engaged in outdoor activities.
Heatstroke can develop suddenly or gradually. The characteristic symptoms of heatstroke include:
- High fever above 40.5°C
- Headache
- Dizziness, lightheadedness, fainting;
- Lack of sweating;
- Red, hot, and dry skin;
- Muscle weakness, cramps;
- Nausea, vomiting;
- Rapid heart rate/pulse, strong or weak pulse;
- Rapid and shallow breathing;
- Behavioral changes such as drowsiness;
- Seizures, epilepsy;
- Coma.
2. Why Does Heat Cause Headaches?
The primary cause of headaches during hot weather is dehydration, as the body loses water and fails to replenish it in time, leading to headaches
Secondly, exposure to high temperatures causes excessive dilation of the capillaries in the head as a response to heat. This expansion leads to pain and worsens headaches, especially when frequently moving between air-conditioned rooms and outdoor environments.
Thirdly, heat can disrupt sleep, reducing oxygen supply to the brain, making headaches more likely and even causing full-body fatigue. During summer, many people drink ice-cold water to cool down, but this can irritate the throat lining, leading to discomfort.
3. How to Prevent Heat-Induced Headaches
3.1. Stay Hydrated
High temperatures cause excessive sweating, leading to dehydration and electrolyte loss. Dehydration can result in fatigue and headaches. To prevent this, it is essential to replenish lost fluids in a timely manner to maintain body temperature balance.
When working in a hot environment, it is recommended to drink about ½ to 1 cup of water (approximately 230–250 ml) per hour. Avoid drinking cold water. Consuming natural fruit juices is an effective way to replenish lost minerals and salts.
For individuals with liver, kidney, heart conditions, epilepsy, or other disorders related to water retention, consulting a doctor about proper hydration during hot weather is advised.
3.2. Limit Sun Exposure
You should limit outdoor exposure during hot weather. This is because sunlight not only darkens and irritates the skin but also makes headaches more likely to occur.
If going outside is necessary, wear a hat and use sun protection, especially between 11 AM – 3 PM. Additionally, wearing sunglasses can reduce the impact of sunlight on the optic nerve. This helps reduce headaches and alleviates dizziness or heatstroke.
3.3. Engage in Moderate Physical Activity
Regular exercise is an effective way to relieve stress and reduce headaches. However, during hot weather, excessive physical activity should be avoided, especially when the sun is at its peak. Avoid overexertion in both work and exercise. If you experience fatigue or exhaustion, stop all activities and take a rest. Additionally, if possible, adjust your outdoor activity schedule to cooler times of the day, such as early morning or after sunset.
3.4. Maintain a Balanced Lifestyle
Daily routines are often affected by hot weather, leading to fatigue and loss of appetite, which prevents the body from receiving adequate nutrition. Furthermore, sleep disturbances such as insomnia and poor sleep quality are common during hot seasons.
You should maintain a balanced sleep schedule and a proper diet. This will help ensure good health and reduce headaches or fatigue during hot weather.
Additionally, incorporating vitamin C-rich vegetables and fruits such as bananas, oranges, tangerines,... into your daily diet. Vitamin C can enhance immunity, promote body cooling, and help the body better cope with summer heat.
In most cases, heat-induced headaches subside on their own within 3–4 hours. However, if headaches become more severe or occur more frequently—more than twice a week for 2–3 consecutive months—it is advisable to see a doctor for timely evaluation and intervention.
To arrange an appointment, please call HOTLINE or make your reservation directly HERE. You may also download the MyVinmec app to schedule appointments faster and manage your reservations more conveniently.
