Geesh, I hate it when they're behavior makes ya so mad ya don't know whether to fight or cry!
After being taken by ambulence to the hosp. & told he had an "episode" with his heart & should go see his doctor, my hubby put off going through with the testing for MONTHS. I finally said to him "Well, you've talked about wanting to just check out (had some very stressful events), so I guess here's your chance - Just don't do anything about it." He went to the doctors shortly thereafter.

As mentioned, nagging doesn't help. He has to hurt enough to want to stop hurting. Pray that it doesn't cost him his life while he's deciding.