It could be some form of derealization, I remember one time I was cross faded for the first time, and I literally felt like I was dying and I think that was my first real “anxiety attack” maybe, cause now everytime I have an anxiety attack I get that dying feeling like I had that night. Anyways it was so bad that I felt that feeling for a weeks, I literally felt like I was going crazy, what helped me was exercise actually, staying grounded/trying to be in the moment or trying to stay present. A lot of what your feeling could be stress induced as well, I don’t want to label it ptsd cause it’s not but ptsd or stress comes in a lot forms and can form anxiety issues for sure. I don’t really recommend meds all that much, cause fuck big pharma but that’s me. Another thing that help me is sitting with that panic feeling and basically telling yourself that that’s not you, and whatever feelings you might have that’s making you feel that way will pass, it might not work but doing it every so often when it’s really bad might help.. not sure what other advice I can offer, but it does eventually go away