Treatments for social anxiety?

My therapist recently recommended I see my doctor about procuring a prescription for an anti depressant and something for social anxiety. I'm a teenager and had been expecting the anti depressant advice but not the social anxiety. When i hear anxiety, I automatically think benzo's but would something like valium or xanax be prescribed to a 17 year old? If not what would be an acceptable treatment? I vaguely remember some article I read about ssri's and social anxiety? Aren't ssri's used for depression also? Could i end up getting a two in one deal? Any insight? thanks.