I can usually eventually find the things my husband loses. However, what is much worse is that he becomes convinced that someone is stealing from him and gets very angry. I am concerned that he will run off our housekeeper or other service people that we need. It is very stressful and time-consuming caring for someone with dementia and I don’t think I could handle it if I had to do i twithout those people helping.
Sadly it's WAY more common than any of us would like.
You can talk to your husbands doctor to see if there are any medications that might help with his paranoia.
Is he on any meds for agitation or anxiety or depression? If not, I would now consider this discussion with his doctor. Nothing "cures" paranoia but he may be less anxious about things he can't find.