I just had a similar situation... I had a huge episode 3 years back ended up getting better (took months) would have a quick few minutes of depersonilzation every now and then but lately it's been bad... Just now I was trying to fall asleep and boom full on depersonilazation and panic attack...i was going to go to the hospital but rememebered nothing was done the first time i went..i called my sister and calmed myself down..i still have it but the panic has subsided some.. Hope you are feeling better. (it does get better, i was almost dp/dr free for over 3 years)