Thanks for your reply.
Today I nearly fainted on the train - the visuals became very strong to the point where bright lights merged together and I completely 'whited' out. I felt nauseous, clammy, etc. Not uncommon on a rush hour train I know! But I can't help thinking it might be linked? Generally, my mental state is pretty good, never feel anxious, panicky or depressed, even since the visuals started in the last few weeks. I just thought there had to be a logical explanation!
Thanks for the advice - drugs and booze have stopped since the visuals started. I know that's not really an achievement considering it's been 3 weeks but I have no intention of taking anything again. In the past I would take MDMA, ketamine, cocaine pretty consistently at weekends for the last 9 or 10 years. In the last year that has dropped to maybe once every 2 months. Acid maybe 4 or 5 times in my whole life, the last occasion being 2 years ago... 2ci/2cb occasionally too.
The way you phrase 'see a Dr if you feel the need to' suggests that there isn't a huge amount they can do? I think I will see one now anyway because of the fainting! But I know nothing about HPPD except what is on Wikipedia, is there anywhere I can find out more about it? Is there a reason why certain people get it? Is it linked to drugs? Sorry if I'm asking basic elementary stuff but I'm so clueless.