I had 18 months off and recently went back to work, and yes, there were a lot of questions about why I'd been out so long. Maybe an answer like maternity leave would be more satisfactory than my vague hiding-my-nervous-breakdown answer, in which case you wouldn't have a problem. Surprisingly, I even had trouble getting back into temp work. My field is admin/accounts, so there may also be a difference in the environment to what you'd be going in to.