Out of six people that I’ve known in my life having a stroke...none returned to absolute normal. One guy in his 30s got bi-polar all of the sudden, and couldn’t be trusted with the simplest matter.
My Mom’s left side was paralyzed. She did regain some use, but she couldn’t cook and lost fine motor control on her left side. Totally changed her personality, too. Before, we didn’t get along. After her stroke, she became less emotional, easier to get along with. It’s too bad it took a stroke to do that.
My father in Law lost his speech, totally. It happened at his job, and he never went back. He also couldn’t drive anymore. To complicate matters, he was diabetic.