Brain swelling, also known as cerebral edema, is the buildup of fluid in the brain. This fluid puts pressure on the brain and can cause the brain to swell. Brain swelling can be caused by a head injury, infection, or other conditions. Symptoms of brain swelling include headaches, nausea, and vomiting. Treatment for brain swelling depends on the cause. An increase in the volume of cerebral blood or cerebrospinal fluid (CSF) a build-up of toxins or metabolites in the brain infection or inflammation of the brain head injury or trauma brain tumors. The most common symptom of brain swelling is a headache. Other symptoms can include nausea, vomiting, dizziness, and blurred vision. In severe cases, brain swelling can lead to seizures, coma, and even death. The first step in treating brain swelling is to identify the underlying cause and correct it if possible. In some cases, medications may be necessary to help reduce the swelling. If the swelling is severe, it may require surgery to remove the excess fluid. In most cases, brain swelling will resolve on its own with time. Maintain healthy blood pressure. Eat a healthy diet. Exercise regularly. Get enough sleep. Reduce stress.