Most schizophrenia to me seems to be a misdiagnosis. Your son is expressing a lot of feelings. I think anyone who can feel, can fully recover. If your son is irrational then cognitive behavioral therapy may help him over come his false beliefs. I'm not a big fan of medication because it deadens ones feelings and reinforces the disorder. In Finland, they have schizophrenia rate of 1 in 100,000 compared to the US where it is 1 in 100. They don't use medications for the most part and their success rate is 90% for first episode psychosis. Schizophrenia isn't a death sentence for most, 2/3 recover to some extent even in the US (though unlike Finland most will be on disability for the rest of their lives).