So for two or three weeks now, OH (mid-stage AD), has been having problems about going to bed at night. It started with just the odd night when he fell asleep on the sofa and I couldn't wake him up to go upstairs to bed. I left him downstairs as there nights were hot and he would come up to bed in the middle of the night. Then that became him not coming to bed all night and this became more regular. Then he started wandering round the house in the middle of the night, switching on lights and rummaging and making it impossible for me to sleep. One night he fell in the dining room at 3am and I helped him to bed but he got up at hourly intervals to go to the bathroom, so was clearly agitated. The problem has now become worse as some nights, he actually gets to the bedroom and gets undressed, then gets dressed again without getting into bed, and goes and sits in a chair somewhere else in the house. He refuses to move and will go to sleep there. Last night I woke up at 4am and found him sleeping with his head slouched forward, in a chair in the spare bedroom. He could have got into the bed there, if he didn't want to sleep in our bedroom. I have tried everything but I just can't work out what's going on. He seems to have an actual fear of going to bed. It's depriving us both of sleep. Does anyone have any suggestions please?