Dizziness and nausea after being hit on the head may be caused by mild concussion, local soft tissue injury, brain hemorrhage and other factors, which can be treated by medication, surgery, minimally invasive surgery and so on. 1. Mild concussion: When the head is hit, it will be easy to have mild concussion, resulting in dizziness, nausea and other symptoms. It can be treated by drugs such as metoclopramide injection. 2. Local soft tissue injury: it may also be caused by local brain tissue injury, such as cerebral contusion, etc., which will cause dizziness, nausea and other symptoms. It can be treated by surgery, such as craniotomy and decompression surgery. 3. Cerebral hemorrhage: After being hit on the head, hematoma in the brain may increase in size and content, leading to increased intracranial pressure and causing cerebral hemorrhage, which is manifested by symptoms such as dizziness, nausea and vomiting. It can be treated by minimally invasive surgery, such as stereotactic hematoma drainage and neuroendoscopic intracranial hematoma removal. When dizziness and nausea occur after being hit on the head, you should go to the hospital immediately, and after clarifying the cause of the disease, the doctor will give the correct treatment according to the examination.