That's easy to answer: Dementia. http://www.dementiaguide.com/symptomlibrary/thinkingjudgement/judgment/ http://www.dementiaguide.com/symptomlibrary/thinkingju

That's easy to answer: Dementia. http://www.dementiaguide.com/symptomlibrary/thinkingjudgement/judgment/ http://www.dementiaguide.com/symptomlibrary/thinkingjudgemen... Dementia can grow slowly over time and can impact your judgement. And said person can be highly functional at the time, so the relatives don't know until something goes wrong.