Cerebral Amyloid Angiopathy - Cerebral Amyloid Angiopathy is a disease in the body's blood vessels that causes a buildup of a protein that can cause the blood vessels in the brain to burst, resulting in headaches. It is commonly brought on by dementia, but can occur in a person who never had dementia.[2] Common cold - The common cold is a disease that mutates too frequently, and is rarely fatal,[3] for a vaccine or cure to be created.[4] Creutzfeldt–Jakob disease - This is a neurodegenerative disease. There is no treatment or cure for this disease,[5] although there has been extensive efforts done to reduce the chance of being infected with it.