Alzheimer’s Disease and many other causes of dementia can lead those who suffer with it to become suspicious and frankly paranoid. There can be changes in the brain leaving sufferers with little or no impulse control. When a person loses control of impulses, minor irritability to turn into dangerous life threatening altercations. Most of the time these altercations do not lead to death but it is not unusual.
The emphasis on discouraging medication treatment of severe behavioral symptoms can be quite tragic.