Has anyone ever suffered from a Social Phobia or Social Anxiety Disorder?

This is for a friend of mine, I think this is the one phobia out of all the others I have, that I don’t suffer from.

If you would be so kind as to share the following:

What type of help did you seek? Did it work for you? What things or thoughts stopped you from seeking help initially? (Or perhaps you never did?). I’d really appreciate some feedback on this, as I really want to assist this friend of mine. Much appreciated.