You need to remember that dementia is a symptom and not a diagnosis and that’s why it’s important you’re aware of the many reversible dementias there are.  There are a number of causes that present like Alzheimer’s dementia but simply put, aren’t. Depression, a thyroid disorder, a B-12 deficiency, Normal pressure hydrocephalus or water on the brain, tumors, drugs and probably the most well known culprit, UTI’s or other infections like pneumonia can all cause your loved to act abberently. If you’re noticing some subtle changes in your loved one and your worried that it could be leading to Alzheimer’s, don’t guess, but get to the right Dr. at your earliest convenience. They’ll be able to give you a pretty good idea of what you’re really dealing with and most importantly, whether or not what you’re observing is actually a form of dementia or something else. There are plenty of situations where families were relieved to learn that they weren’t dealing with dementia at all.