Dizziness, diarrhea, and nausea are considered to be related to acute gastroenteritis, gastrointestinal colds, severe anemia, and vestibular neuronitis. The causes need to be clarified for treatment, the details are as follows: 1. Acute gastroenteritis: Acute gastroenteritis is usually induced by the consumption of raw and cold stimuli or unclean food, is an acute inflammation of the gastrointestinal mucosa, which can lead to the breakage of the intestinal mucosa and slowing down of peristalsis, thus causing dizziness, diarrhea, nausea and other symptoms. Patients can take digestive drugs under the guidance of doctors, such as domperidone, mosapride to help promote gastric emptying, relieve nausea, vomiting symptoms; patients with diarrhea symptoms can take montelukast for treatment, but also anti-infective treatment; 2, gastrointestinal flu: if patients have dizziness, diarrhea, nausea symptoms and at the same time there is chills, cold performance, consider with the gastrointestinal flu. Gastrointestinal colds are mostly caused by viral infections. This kind of patients can take Huo Xiang Zheng Qi soft capsule orally under the guidance of doctor, and give rehydration, anti-diarrhea, maintain water-electrolyte balance and other treatment. 3, severe anemia: anemia can lead to insufficient oxygen supply to the whole body, involving the nervous system, digestive system, there will be dizziness, diarrhea, nausea and other symptoms. In this case, you should go to the hospital in time to clarify the cause and type of anemia, and carry out corresponding treatment under the guidance of the doctor.4. Other: For example, vestibular neuronitis, vaginitis, intracranial occupying lesions, etc. When vertigo is severe, most patients will have autonomic-related symptoms, such as nausea, vomiting and diarrhea. In this case, it is necessary to go to the hospital in time for clear diagnosis and treatment. When dizziness, diarrhea and nausea occur, you should pay attention to diet, eat more light and easily digestible food, avoid spicy and stimulating, raw and cold food; pay attention to more rest and reduce physical exertion. If the symptoms do not improve significantly, go to the hospital for routine stool and blood tests in time to prevent delayed tests from aggravating the condition.