Thank you for the added information. It helps a lot. I believe I can now be of help with this issue.
First, let me say I was worried that the schizophrenia would be in the diagnoses. I can imagine how frustrating and worrisome this situation must be for you. On the one hand your grandson is an adult and he legally has responsibility to care for himself and the right to refuse treatment until he does something that justifies forcing treatment. But on the other hand you are clearly very loving and caring and you know he needs help.
He is most likely going to continue resisting allowing you to talk to his doctors so that you can influence the treatment. But it is important for you to not become adversarial about this. To have him feel that you are on his side. Why?
Because taking his meds, staying true to the treatment, and staying stable, is his lesson to be learned and he will not learn it from being lectured to about it or have his errors pointed out. He will become defensive. So it is vital for you not to take your grandson's situation personally and to always make him feel as if he is in charge of himself. This is your best chance, even if it is not such a big one, of getting through to him.
One of the problems here is that with many schizophrenia disorders sufferers and some bipolar disorder sufferers, manipulating the situation to avoid medication or treatment in general is part of the disorder. It is very pernicious and very difficult to treat. I would like to recommend to you the work of Dr. Xavier Amador. I think that in this area of treatment resistance he has been invaluable to all of us working with schizophrenia. I know some people don't go for his style, but I have found it very valuable and I think you will see its value as well. His whole approach is to find the way to make treatment a win-win situation. Because for your son, treatment is only for others' sakes: family, doctors, etc. Not for himself. The meds probably cause whole sorts of side effects he doesn't like. And this is going to be true of any meds the doctors come up with. Because resistance is often part of the illness and all meds have side effects.
So this approach can help you very much. But not only you personally, but the whole family. Here are his two most known books:
I am Not Sick, I Don't Need Help. This is the book that made Dr. Amador famous. It details a bit the story of his brother, who will remind of you of Leo probably in some aspects. Amazon page for it:
The other book is I'm Right You're Wrong, Now what? Break the Impasse and Get What You Need. Amazon page:
So, read it and digest the idea and then see if you can spread the approach slowly among the family. I wish you the very best!
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