My grandmother has suffered from paranoia and delusions all her life but has refused treatment because the medical industry is out to get her.
She has a personality disorder in the form of when she doesn't get her way she runs a wild campaign against the person who refused her.
My grandfather passed away in 2017 at the age of 70 from natural causes because she would invoke mental and emotional abuse on him every time he sought medical treatment for his ailments. My mother got Adult Protective Services involved but they could not prove he wasn't in his right mind so nothing was done to help him.
She has been living on her own ever since his passing, occasionally receiving help from family when she asks.
She is very mean and cruel, she says hurtful things to her children just because she can. No one wants her to live with them because then she will start her tirade in their house. She insults her son's wife, her daughter's husband, she told me she hates the fact that I'm married because it takes my attention away from her. When she calls it's either to guilt you into doing something for her or to get info on someone else she's upset and isn't speaking to her to pull you into her weird stalking game. She is just drama, screaming, cussing, anger, paranoia, suspicion and delusions all the time.
When my grandfather was dying in the hospital she refused to cooperate with the hospital staff, screaming at them, calling them names, cussing at them and telling them they were killing him when in reality he was dying because she wouldn't allow him to get help when he could. One of the nurses said to me, "She has dementia?" I told her no, "She's always been this way."
There is going to come a time when she cannot care for herself but what are we to do if she refuses treatment and care?