Hey dejavu,
Have you ever been alone in a room full of people. I have, and it is very undcomfortable.
To answer you last question, you should see your physician first to make sure you have no physical issues going on. A combination of psychotherapy and medications is the usual choice at this time to treat social phobias.
CBT is very helpful for many people. If you have questions on treatment modalities please just ask and someone will give you the information.
Bless you and know I am here for you.
Hugs
Kitt