The Last 2 Nights, I Have Fallen Asleep In My

The last 2 nights, I have fallen asleep in my chair in the Living Room and have awoken in the early morning to find my right hand to be very swollen - to the point of being painful... After arising and going into the bedroom and laying down on the bed, the swelling seems to ease-up and when I awake for real an hour or two later, the swelling has abated...