Social Anxiety Disorder is something that a lot of people live with. I definitely have that and I know that it is really rough. I don't leave the house much and I usually freak out in large crowds. I'm talking about going to walmart and breaking down and crying. Grocery shopping is hard. I buy a lot of stuff online.
For treatment, I'm on medication. I take sedatives when I leave the house but it doesn't always help. I'm also on an anti-depressant but that just minimizes the crying, but doesn't help when I'm having an anxiety attack.
I used to be in therapy but it didn't really work. I would suggest talking to your doctor about some sedatives. I know it isn't fun being a zombie but it is a hell of a lot better to be calm then to freak out whenever you leave the house. You take the good with the bad. I have major panic attacks frequently, so I totally know what you are going through.
If you need to talk, don't hesitate to send me a message. I'm here for you.