Creutzfeldt-Jakob disease (CJD) is a rare and fatal condition that affects the brain.
More information on Cjd is available here.
Severe head injuries require immediate medical attention because there's a risk of serious brain damage.
More information on Major Head Injury is available here.
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.