Info on Dementia that can affect memory, good judgment, along with a list of many other factors. Should see a doctor for more information really.
Info Here
http://www.alz.org/what-is-dementia.asp
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001748/
http://www.healthline.com/search?tli...c4c16909e3f754
Note my father had Dementia and on his last day did not recognize me, until I played my guitar.
More info
Dementia usually occurs in people aged sixty years or older. In fact, the risk for dementia increases as we age. Symptoms of dementia include impaired memory, difficulty with thinking skills, language, poor judgment, and behavioral problems. In most cases, dementia is incurable and cannot be reversed.