Usually, heat to does not cause diarrhea, but other symptoms such as dizziness and headache may occur, while the symptoms of diarrhea should be considered the possibility of other diseases such as enteritis.
Heat to may cause heatstroke, which is mild, with symptoms such as dizziness, headache, fatigue, and elevated body temperature; in severe cases, there may be a drop in blood pressure, profuse sweating, and an accelerated pulse rate. Continuing to be active in hot weather may even lead to diseases such as pyrexia and heat exhaustion, but usually does not cause diarrhea.
With diarrhea, the possibility of other pathologic factors such as acute enteritis, food poisoning, gastrointestinal flu, etc. should be considered.
Whether it is heat stroke or diarrhea, it is important to pay attention and seek medical attention as soon as possible.