Loved One's Mental State on the Decline // PLEASE HELP

I honestly have no idea what (Q = loved one) has, but the closest thing I could find is paranoid personality disorder. Q has been exhibiting delusional thinking, paranoid thoughts, a sense of grandeur, relationship failure (with both women and friends), job loss, and various other forms of psychotic behavior. Recently, things have taken a turn for the worse since Q lost his job and has had various other falling outs. His housemate is leaving because he is scared to live there with him. And unfortunately this whole situation has me caught up in the middle of it.

Ever since I can remember, Q has been closer to me than anyone else in the family. He's had a mental break before but nothing as severe as what's happening now. He often makes really bizarre and inappropriate comments to people and seems to think some people are out to "get him" or are "watching" him. He pretty much has at least one problem with everyone in his life except me so this is why I feel I'm the only who can help. He won't admit he has a problem. He's already diagnosed with depression and is being medicated for it. I don't think he is seeing a therapist at the moment, but he has told me before they don't know what they're talking about.

As far as I know, he has never been physically violent. Q is often verbally abusive, but has never physically hurt anyone at least not to my knowledge. I know he has said he felt like he could hurt or kill someone, but has never acted on it and hasn't recently mentioned hurting someone.

Things have really ramped up since his last mental break. There are a lot of things coming down on him right now that are causing boat loads of anxiety and my fear is that he is going to break and when he does it may not be pretty...

My question is, what should I do? Do I confront him about his illness? Do I let things simmer down? Should I tell the police? The family has an idea of what's going on, but I think I'm a little more aware of the situation. Bottom line; I love Q and I can't imagine Q ruining his life over a disease that could potentially be treated. Please HELP.

It sounds like he's in a high stress moment and maybe direct confrontation of suggesting he has a disorder would be ill-advised at this moment. Maybe you can say you noticed he's been stressed out and going through a lot lately and that he should do some stuff to let out negative emotions. Offer to do activities with him if it's possible. Be sure it's something he enjoys and is relaxing for him though. You could also suggest that it may make him feel better to talk to a therapist. If he didn't like any previous ones he's had then suggest to him he find one that better suits him. That's all I can think of for now though. This part of the forum seems pretty inactive so idk if this reply was in time.