Hi - have you done some of the things talked about on this site? Have you cleansed your liver, colon, kidneys? Have you changed your diet? If you're itching I've got to wonder about fungal infections. Have you treated yourself for candida? Have you tried anti-infectives like Colloidal Silver ?
You are praying and using scripture. Have you checked out any of the ministries that have a lot of success with healing? Many if them will work with you on the phone and there is no charge or request for money. I don't remember if I listed any here. If not and if you're interested I'd be happy to find the links.
I know you're exhausted, but don't choose to give up. With God all things are possible.