The adjective confined describes a space that is cramped or small and constricted. You probably don't see any claustrophobic vampires because if they were claustrophobic, they'd have a fear of confined spaces — like their coffins.
The adjective confined describes being in captivity or not free to move about. If you do charity work, you could read books to older people confined to their homes. You could move your confined arms better if you just took off a few layers of clothes; you really don't need three sweaters, a vest, and a coat in 40 degree weather — even if you are from Arizona.