Conversation: The conversation between human and AI assistant.
[|Human|] My brother-in-law is in his late fifties or early sixties, and he has cerebral palsey.  He is experiencing sudden, rapid weight loss.  His primary care doctor tells us all of his blood work is normal.  She attributes the weight loss to her taking him off a medication for schizophrenia.  She has no idea why he was on it in the first place (his medical care has been very inconsistent).  His appetite and his diet have not changed.  What do you suggest?
[|AI|]  Hi there ~I understand your concerns.  I believe that your brother was being given medications or schizophrenia.  Most medications that are given for schizophrenia, causes one to have weight gain due to increase in appetite.  Going off of the medications will make your brother to lose this appetite and consequently lose weight as well.  I believe that you might have to monitor him for a while to see if his behavior changes.  I hope this helps. Take care and have a lovely day!