I'm sitting here and I feel dizzy, but I'm not sick. What's going on?

Sudden dizziness may be caused by insufficient qi and blood, or it may be caused by insufficient blood supply and oxygen supply to the brain caused by you maintaining a posture for a long time. Patients with lumbar disc herniation, cervical spondylosis and other diseases will be accompanied by itching. Suggestion: You can rest properly. If dizziness symptoms do not disappear after rest, you need to seek medical attention in time.