Hello, Thanks for choosing health care magic for posting your query. I have gone through your question in detail and I can understand what you are going through. His learning abilities have been hampered probably due to the cognitive deficits of the schizophrenia itself rather than the medicines. But the stiffness in hands I agree is due to the medications and if he is not tolerating then the medicines need to be changed. You have not mentioned which medications he was earlier on and hence I cannot suggest you some new meds but overall the option of olanzapine or quetiapine are quite safe. Hope I am able to answer your concerns. If you have any further query, I would be glad to help you. In future if you wish to contact me directly, you can use the below mentioned link: bit.ly/dr-srikanth-reddy Wish you good health, Kind regards Dr. Srikanth Reddy M.D.