Yeah, that makes sense -- it's not common, but it makes sense. It means that the symptoms you have are mild -- that is, they might not take up tons of your time, or you might have some control over them -- but maybe they happen in a certain setting and that makes it so they affect you a lot, or maybe when they happen you end up doing things that cause you problems in your life. So the symptoms would be mild then, but the degree to which they affect you might be severe.