Is it possible for a person who carries a diagnosis dementia to be a POA or DPOA?

Takerfan has asked a new similar question. So, how can we help without enough information?

May I ask what your relationship and/or role is to the person for whom the POAs were executed?

Well, I sure wouldn't want someone with any degree of dementia to be my POA -- Not even my husband, who loved me dearly. I trusted him but not the dementia!

But it seems to me the solution is very simple. The person can simply designate someone else as POA, rescinding all previous documents. What is the situation of this resident?

I believe the POA was diagnosed prior to assignment and did not reveal the diagnosis to anyone until after the paperwork was signed. She wants to be in control, plain and simple, and does not gave the resident's best interest at heart. It's a very sad and hurtful situation. I don't believe it's very advanced dementia but she does have enough memory issues that I feel it's not right for her to be POA. Of course that's just my opinion and that's why I want others' thoughts and opinions.

Anyone can assign another person to be their Power of Attorney, just curious why that person would assign someone who has dementia.... if it is early dementia I don't see a problem. Or was the Power of Attorney put in place years ago before the POA developed dementia?