Ptxd happens when you think or look over your ugly emo/scene days. This can happen when you're looking over your old twitter, facebook, instagram, etc. The word itself is a mixture of ptsd and xd.
"I was looking at my twitter from when I was ten and I posted a picture captioned 'owo'. I want to die, I'm having ptxd right now.
by tiddymuncher February 21, 2017