Sudden stomach pain, dizziness, and sweating are associated with gastrointestinal cramps, hypoglycemia, and heat stroke. First of all, when gastrointestinal cramps occur, the smooth muscles of the digestive system will contract and spasm strongly, which will not only cause sudden pain in the stomach, but also lead to excitement of the vegetative nerves, thus causing dizziness and body sweating. Secondly, hypoglycemia mainly occurs when the human body is overly hungry, and some people will have pain in the intestines due to spasm when they are hungry, and at the same time, hypoglycemia will also harm the nervous system, so many people will suddenly appear dizziness and sweating when hypoglycemia attacks. Then, when the temperature is too high, it will affect the central nervous system of the human body, and some people will be poisoned as a result. When heat stroke strikes, patients will have symptoms of the digestive system, with nausea, vomiting, abdominal pain, diarrhea, accompanied by dizziness and sweating.