Hello, I Am Concerned With My Husband's Gait. I Have

Hello, I am concerned with my husband's gait. I have noticed that originally this started with some back pain he began listing to the right. The back pain has gone away and occasionally he will list either to the right or to the left. It changes. He does have a large stomach so I am wondering if perhaps this is the cause or if there is something that could be going on that is serious.