Dizziness, nausea, vomiting and sweating are mostly caused by a variety of reasons such as hypoglycemia, hypotension or hypertension, transient ischemic attack, cerebrovascular disease, insufficient cerebral blood supply caused by cervical spine disease compressing blood vessels, vestibular neuropathy, heart disease, gastric disease and so on. Because of the complexity of the etiology, it is best not to use medication indiscriminately before the condition is clearly diagnosed, so as not to cover up or delay the condition. You can drink the right amount of sugar water, lie down and rest for a while, generally can make the symptoms get relief, at the same time, we should go to the regular public hospital internal medicine consultation, do head CT, digestive system ultrasound, brain Doppler, cervical spine CT, electrocardiogram, blood glucose and blood lipids tests, blood pressure and other tests, a clear diagnosis to find out the cause of the cause of the disease, by the doctor specializing in the cause of the treatment taken accordingly.