I'm a clutz in general, but I do get more clumsy when I'm anxious. I always have bruises on my legs and arms because of how often I bump into things... I seriously think I have a perception/peripheral vision problem. If I'm not looking straight at an object, I don't see it, or I misjudge how far it is from me. But I'm not sure if that really is screwy peripheral vision, or just being absent-minded, which could be anxiety induced.