This is a difficult situation you are in. The diarrhea is part of the panic / anxiety episodes. You could also have what is called as Irritable Bowel Syndrome. IBS is a functional disorder in which psychological issues play a major role. Anxiety and stresses increase the bowel movements associated with abdominal pain.
The numbness in the hands and the rest of the body is another characteristic of acute anxiety.
You will benefit from an anti-anxiety agent. Have you tried any of the anti-anxiety drugs?
You seem to have lost confidence. I understand this is can be difficult, but you will have to find out your anxiety provoking things, events, situations, etc. This can be achieved by brief psychotherapy sessions. If psychotherapy has not worked for you, it could be given a second chance.
I've experienced the most amazing sympthoms ever in my life. Having been a very outgoing person, with a lot confidence in my self, suddnley I moved out from UK to live with my boyfriend in Holland and now I get sever episodes of panic attacks, unwanted thoughts that follow me all day, sensation that I am being watched, all this makes me feel like I am going crazy, please anyone who can advise something? thanks