Mine is bad trip induced. Took a high doce of acid with cones at the peak. Could feel the fabric of my sanity crumbling and was in such severe pain I wanted to kill myself and had to be stopped from doing so. There was huge anxiety, which did not completely stop even with some of strongest medication. Very strong symptoms of psychosis and the worst pain I've felt and yet the HPPD symptoms aren't as negative as others I've read here. I don't get DP/DR and my visuals are textures (especially on trees) and vibrancy of colours. I can even lucid dream at will closing my eyes within ten seconds. However, all this only makes me worry that I'm two steps away from psychosis.