I am unable to attend public functions or socialise with other people. I feel discomfort while doing so. I prefer staying at my home rather than going for it. From my experience whenever I go to functions or is in a crowded place I feel like stressed and starts to sweat continuously and also my heart rate increases. Also I talk very less and, even don't know what to talk. I prefer alone with my family. It is difficult for me to make eye contact with other people and sometimes I feel that I am being watched. What is the reason for this.