Dizziness, nausea, vomiting and wanting to have a bowel movement are mostly caused by acute gastroenteritis, and may also be caused by cerebral vasospasm and so on. 1. Acute gastroenteritis: it is an acute inflammatory reaction of the mucosa of the gastrointestinal tract. The main manifestations are nausea, vomiting, abdominal pain, diarrhea, loss of appetite, fever, headache, dizziness, fatigue and other symptoms, so there can be dizziness, nausea, vomiting and wanting to stool symptoms. 2. Cerebral vasospasm: intracranial vascular stimulation triggered by intracranial arterial persistent contraction, which can be manifested as headache, dizziness, nausea, vomiting, limb weakness, muscle atrophy, numbness, hypesthesia, etc., but also cause vegetative nerve dysfunction, which leads to the desire to relieve the bowel movement. There are many other causes of dizziness, nausea, vomiting and wanting to defecate, which should be taken seriously, and timely consultation should be made to identify the cause of the disease and follow the doctor’s instructions for further treatment or therapy.