How does dizziness do after the back of the head was hit

Dizziness after head collision may be related to concussion, brain contusion and laceration, cerebral blood supply insufficiency, cerebral blood vessels may be damaged after head collision, cerebral vasospasm may also be easily displayed, brain tissue ischemia, hypoxia, dizziness symptoms may be displayed, bed rest is recommended, if there is subcutaneous hematoma of scalp, local cold compress is recommended, hot compress is recommended after 24 hours, and swelling symptomatic treatment. If it shows spray-like vomiting, lethargy, confusion, consciousness disorder and other manifestations, it is necessary to see a doctor in time for head CT examination to further rule out intracranial hemorrhage.