Trish, two years ago we were down in Tennessee for my mom's breast cancer surgery. Jim started getting a fever and acting odd. He kept getting worse so I rushed him back here to Chicago and he was admitted into the hospital. Several hours later, after one ct scan, lumbar puncture and blood work, it was ruled that he was simply dehydrated. His meds weren't flushing correctly due to the dehydration. That explained the odd behavior, at least for that moment.

He stayed in the hospital for a week.
So, lesson here is drink fluids, eat well and stay out of the sun.