Mom in law has a man in her head that torments her. She’s now wanting to die. How can I help her?

Do some reading about Lewy Body dementia. I seem to recall that in LBD, delusions are hallucinations are the first symptoms to appear. And yes, there are meds that can help.

If the Neuro can't help, get her to a geriatric psychiatrist. In fact, make an appointment now, because it often takes months to get an appointment. Easier to cancel than to make one.

I would go to the neurologist and have it ruled out that its not a neurological problem. He may then refer you to a psychiatrist. There are meds that will help with this.

Write down everything you see concerning MIL. Does she reason well. Does it take her a while to process what you say. Are there slight changes. When does this man talk to her? If late afternoon she could be sundowning. It might be something you chalk up to age decline, write it down. When you get to the office, give the receptionist the list. This will help the Dr. In asking the right questions.

MIL may need to see a psychiatrist. It doesn’t sound like her concerns are physical. My mother did have dementia, but before it became apparent that she did,she was convinced a man at her apartment building was stalking her. It’s very real in their minds. Ask her PCP of they think she could benefit from speaking to a psychiatrist.