An aneurysm is a bulge in a blood vessel caused by a weakness in the blood vessel wall, usually where it branches.
Our Health A-Z contains more information on Aneurysm.
Encephalitis is an uncommon but serious condition that causes inflammation of the brain.
Our Health A-Z contains more information on Encephalitis.
Severe head injuries require immediate medical attention because there's a risk of serious brain damage.
Our Health A-Z contains more information on Major head injury.
Important: If you have these symptoms, they may be unrelated to any of these conditions listed. If you are concerned about your symptoms then you should see a doctor.