I had 2 panic attacks within a month but second attack was accompanied by derealization, which is always a trigger for panic when I think about it. It is there from the time I had second panic attack. Currently I'm taking Prazonal tablets at night. Since I've been taking tables I'm getting rest from derealization in the morning but by the evening and night it start to come and more when I think about it which is accompanied by fatigue and rapid heartbeat. How long should it take to derealization to go away as it is hampering my daily activities. Views welcomed. Thanks.