My brother, who is a 69-year-old caucasian, had a stroke about 7 years ago that caused the muscles on his right side to become almost useless. No paralysis, but a weakening of muscles. Some days he acts extremely sleepy and his speech is very slow and slurred, so much so that it concerns me. The next day he may act much better. It may not happen again for several weeks. He says it s because he needs more sleep. I may need more sleep sometime, too, but my speech is never slurred like that. What could be wrong? Is it really only needing more sleep, or something more?