Some people who go to the hospital after driving injuries or construction site injuries may present with dizziness and nausea. Some injuries may be superficial, such as a scalp injury, while others may be caused by the impact of a heavy object. Although there is no injury on the scalp, symptoms such as dizziness, nausea, vomiting, and drowsiness may occur. Drowsiness is usually caused by traumatic brain injury. The dizziness, nausea, vomiting, or headache that occur as a result of these injuries are collectively referred to as post-traumatic brain injury syndrome. Some of the symptoms that occur after a traumatic brain injury require treatment. These symptoms can sometimes occur just after a traumatic head injury, and sometimes they can occur as a delayed reaction. For example, a person working on a construction site had a heavy object fall on his head and went to the hospital for a CT scan, but 3 months later, the person developed a headache and a hematoma was found inside. This is why the first visit after a head injury is very important. It is still important to follow up if there are subsequent symptoms, such as dizziness, nausea, vomiting, headache, etc. Some people will have late onset. Also, headaches are sometimes just a symptom of the injury. It is important to visit the hospital when head trauma occurs. Some people present with mild and some with severe manifestations, and it is important to rule out skull fractures. It is also important to rule out subdural and epidural hematomas, as well as bleeding caused within the ventricles of the brain. If there is a hemorrhage, hospitalization is required. Whether the injury was caused by someone else at the time, or was a bump caused by one’s own carelessness, it needs to be treated and treated before considering anything else. There are risks involved in such a situation, some of which can be life-threatening. Therefore, when head trauma occurs, regardless of whether there are symptoms of dizziness or nausea, or other symptoms of damage, it is important to go to the hospital, because some people have symptoms that appear later, so you should make a judgment as early as possible and follow up regularly.