Heatstroke is a serious medical condition caused by prolonged exposure to high temperatures that can be fatal if not treated. The risk of heatstroke has been increasing in recent years. To prevent heatstroke, it is important to stay out of direct sunlight and heat when possible, keep the body cool through drinking cold fluids and bathing, and keeping indoor environments cool by closing windows and using fans. Prompt medical treatment is crucial for anyone experiencing symptoms of heatstroke such as confusion or loss of consciousness.