I've abstained from all drugs since January but I still get negative after-images from everything I look at, walls slightly moving and melting, straight lines keep wiggling, ghosting and double images, thick visual snow, among other symptoms of HPPD. I also feel pressure in my head every moment, which is one of the most debilitating symptoms for me, and occasionally feel like I'm tripping and body euphoria even though I'm completely sober. The only thing that had really gotten better are feeling of anxiety and depersonalization/derealization.
I've been in this hell for almost half a year now, at first it had been getting worse and worse until where I am now with these head pressure and visual symptoms. I think I got this from binging on MDMA for a year and years of using cannabis very heavily. Strangely all of these symptoms hit me after I quit all drugs in this January and progressively got worse. If it's not a disease or just anxiety why am I not getting better after agonizing in this hell for half a year so far?
I've been to several doctors including a neurologist, done many tests but they found nothing is wrong with me physically. I still can carry on everyday activity and do my job, but inside I'm constantly bothered by head pressure and visual disturbances, and worry that it might never go away. I seriously think if it will just keep getting worse until I completely give up. Even though I really miss smoking weed and going to music concerts with my friends, I've given up all those and I'm willing to stay off drugs as long as it takes for this to go away, but in the meanwhile I need help from anyone who had been through this or know about this.
Most of this is a mild form of physichosis from you over thinking everything. Sounds like you have come to a sort of realization or went through something very traumatizing. I've gone through this exact same thing and have never been the same since although mine started off a bad trip of 25i and my girlfriend yelling at me...i actually believe it's ptsd. It was very bad and I was very depressed for a while but about a year or so later I'm almost normal but now am extremely anxious at times, especially when doing any drugs besides downers. I had to be sober for a very long time till I was comfortable to slowly start smoking weed again. Convincing myself it's all in my head