The top of the head slightly hit dizziness, whether it is important should be based on the degree of dizziness and whether it is accompanied by other symptoms to decide, slight dizziness generally does not matter, serious or persistent dizziness may be more serious, should be promptly diagnosed and treated. 1. Slight dizziness: when the top of the head after the impact, there is a slight dizziness, in general, no intracranial tissue vascular damage, you can use ice packs to ice the impact area to relieve local swelling, general dizziness symptoms can be relieved after rest. 2. Severe dizziness: When there is severe dizziness after impact, persistent dizziness without relief, or accompanied by other symptoms such as nausea, vomiting, there may be concussion, intracranial hemorrhage, should go to the hospital in a timely manner to avoid delays in treatment.