Lord You can see clearly what's happening here. Make Your will clear to this man who is feeling so down, or You can show one of the doctors. Fight for him. Lord I believe strongly You are working behind the scenes here, even when we can't see it You're working, even when we can't feel it ,You're working. Bring a mighty deliverance as this guest continues to trust You in a very difficult place.
God protect this guest in the shadow of Your wings until this storm is past.
Please keep posting for prayer, I know people who have expressed themselves as you are now and have come through, they also are followers of Jesus, do not let the accuser condemn you for being unwell . He is a liar. I am not pretending to be in the place You are but I can get a glimmer, waiting on God when you are in pain is very very tough, but I believe for you. Hold on. He will make a way. You're thoughts are not reality. They are just thoughts that have been interfered with. Keep seeking His will. He will come through.