My husband has Multiple Sclerosis. It's advanced and he has memory/dementia issues also. He sees a psychiatrist and is taking Aricept and Namenda for the dementia. After waiting a year for FDA approval, he just started a new medication for MS. It's called Ampyra and is supposed to help with walking and fatigue. He's been on it about 2 weeks. I am his caregiver. This morning I laid out all his pills, he asked "Where is my Ampyra?" I said, you already took it, I said no you didn't, things escalated, he picked up the Ampyra bottle and thrw it across the room. The cap popped off and the pills scatterd. WE picked them up together but when I counted two pills are still missing. I threatened to call the police, telling him "You're crazy." I stormed out of the house and went for a walk. I returned to find him in the bedroom, sitting and watching TV. I've become generally frightened of him. He's never acted up about taking his medications before.