If there is a sudden appearance of dizziness, nausea, sweating and other symptoms need to exclude whether there is a cause of hypoglycemia, this situation is mostly seen in fasting for too long, excessive physical labor caused by a large amount of energy consumption, or diabetic patients in the absence of food in the case of oral hypoglycemic drugs, the conditions can be measured in a timely manner blood glucose testers directly punch sugar water, eat a sugar cube. If you are a diabetic patient, you must pay attention to the usual strict control of blood sugar stability, not only can not be too high, but also to avoid too low to avoid serious complications symptoms. This condition may be caused by cervical spondylosis, where changes in the curvature of the cervical spine can compress the vertebrobasilar artery leading to insufficient blood supply to the brain, and also symptoms of dizziness, nausea and sweating, which need to be treated with physiotherapy, traction and acupuncture for the cervical spine.