There are many reasons that can cause dizziness and swelling, so it is best to make a clear diagnosis first and then treat the symptoms. If the symptoms of dizziness and brain swelling appear, it may be caused by the following diseases: 1, hypertension: people who have suffered from hypertension for a long time sometimes feel dizzy and swollen, and even nausea, vomiting and other symptoms, this time if the blood pressure is measured will generally be elevated, this situation can be given first to lower the pressure treatment after the above symptoms disappear or improve, you can basically confirm the diagnosis. 2, cold: some people with a cold will also appear dizzy, this time if accompanied by a runny nose, sneezing and fever and other symptoms, the basic diagnosis can be made. 3, poor rest: people who sleep poorly or have a short sleep time sometimes also appear dizzy and swollen. 4, cervical spondylosis: If there is obvious cervical spine osteophytes compressing nerves and blood vessels, resulting in insufficient blood supply to the vertebral artery, dizziness and brain swelling will also occur. 5, Meniere’s syndrome: mainly edema of the vagus nerve in the inner ear, leading to balance disorders, which can also cause dizziness and brain swelling at this time. 6.Insufficient blood supply to the brain: As we grow older, the blood vessels in the brain will harden and become thinner, leading to a decrease in blood flow, resulting in insufficient nutrition for brain tissue. 7, other causes such as emotional excitement, overdose of drugs, glaucoma, etc. can also lead to dizziness and brain swelling. When dizziness and brain swelling occur, it is recommended to go to the hospital promptly and not delay treatment.