Does any one else find the psp sufferer they are caring for has this laughing at things that are just not funny. It is driving me to the edge of my patience, quilt hanging in the commode, hysterical laughing, commode tipped on floor , funny. Can't swallow tablets cause he can't stop laughing.Knocked cup of tea over, funny, dinner plate knocked on floor , laughing non stop. Getting out the car, he won't let go of door, laughing again, and that's how it goes on all day and night. I know someone will say better than crying , but I'm at my wits end. Does any other carer have this problem.?