feelingbetter, your story is similar to mine. My doctor told me very much the same thing he told you. I was skeptical. And the first time I tried Zoloft, I didn't stick with it (because of the side effects). But later I went back on it at a lower dose. It seemed to help my depression but did nothing for my SA. But I stuck with it, and after about 6 months I began to notice a difference. I began to realize that certain social situations no longer caused me great anxiety. I was still myself, quiet and introverted, but I no longer had the fear that would cause me to be unable to function normally.
Just like you, I've had this condition all my life. And certain behaviors had become entrenched in my personality. I had learned to avoid things that I thought would be anxiety provoking (learned behavior).
I'm doing much better now. I've been able to go to social events such as weddings, and for the first time, enjoy it. I've met a wonderful girl whom I am in love with - something I thought I would never experience. Even though I'm 49 years old, I feel younger than I've felt in years. So even if I don't make any more improvements, I am more than satisfied with what Zoloft has done for me.
Before this starts sounding like a drug commercial, I will add that a lot of credit also goes to my friends (online and offline), who have put up with my self pitying rants and encouraged me along the way. Thank you (SAS members) for your support.