Why does heatstroke cause headaches?
Jun 24, 2025
Source: Cainiu Health
Dr. Yang Ziqi
Introduction
Under normal circumstances, possible causes of headache induced by heatstroke may include elevated body temperature, dehydration, heat exhaustion, solar dermatitis, and insufficient cerebral blood supply. Symptomatic treatment is required through general therapies and medication. It is recommended to develop good daily habits, maintain a regular schedule, and engage in appropriate physical activity to help strengthen physical health and reduce the likelihood of heatstroke.
Under normal circumstances, the causes of headache induced by heatstroke may include elevated body temperature, dehydration, solar dermatitis, heat exhaustion, and insufficient cerebral blood supply. Symptomatic treatments such as general care and medication are needed. If discomfort occurs, timely medical attention is recommended for appropriate treatment under a doctor's guidance. Detailed analysis is as follows:
1. Elevated Body Temperature
During heatstroke, due to excessively high environmental temperatures or increased internal heat production, body temperature can rapidly rise, possibly exceeding 38°C. The high temperature directly affects the central nervous system, causing neurological dysfunction and subsequent headaches. It is recommended to quickly leave the high-temperature environment and move to a cool, well-ventilated area.
2. Dehydration
Excessive sweating in high-temperature environments without timely fluid replacement can easily lead to dehydration. Dehydration causes blood concentration and reduced blood volume, resulting in insufficient cerebral perfusion and headaches. It is often accompanied by symptoms such as thirst, decreased urine output, and increased heart rate. Active hydration with fluids and electrolyte replacement is recommended to help alleviate symptoms.
3. Solar Dermatitis
Prolonged exposure to sunlight can damage the skin due to ultraviolet radiation, leading to solar dermatitis. Inflammatory mediators released during the skin's inflammatory response can affect local blood vessels, causing headaches, often accompanied by skin erythema, itching, and a burning sensation. It is recommended to use medications such as calamine lotion, compound menthol camphor ointment, or mometasone furoate cream under medical guidance.
4. Heat Exhaustion
When heat stress exceeds the body's adaptive capacity, heat exhaustion can occur. During heat exhaustion, cardiac pumping function weakens, leading to insufficient cerebral blood supply and headaches. Symptoms may also include pallor, cold sweats, and decreased blood pressure. Immediate medical attention is advised, with medications such as Huoxiang Zhengqi Water, glucose injection, and chlorpromazine tablets administered according to medical instructions.
5. Insufficient Cerebral Blood Supply
Prolonged exposure to high temperatures and dehydration can also lead to inadequate cerebral blood flow. Reduced cerebral perfusion affects normal brain function, causing headaches and other discomforts, potentially accompanied by dizziness, memory loss, and difficulty concentrating. It is recommended to use medications such as clopidogrel bisulfate tablets, rosuvastatin calcium tablets, or amlodipine atorvastatin calcium tablets under medical supervision.
It is advisable to cultivate healthy lifestyle habits daily, ensuring regular作息 (作息 should be translated as "rest and activity cycles"), moderate exercise, which helps improve physical fitness and reduce the likelihood of heatstroke.
