This is an awful feeling. I too would isolate myself when I would get this way. I am now lucky that my husband has learned to understand my lanuage and behaviour to help me come out of my episodes or let them get to far. It's been helping quite a bit learning more each day. Here is a big hug for you and the pdoc does not have an after hours service? I would call it if you can't wait till morning. Before you leave this appt make sure you ask what steps to take when you feel this is coming on again.