Hi I'm new on this forum, and I have a question. I took LSD about 18 times in 6 months, smoked weed daily during that period and for 4 years prior (although now I've stopped all drugs, including alcohol). My last trip was in May, although some of the visual effects have persisted. I wonder, has taking all that acid once every week or two for 6 months caused permanent HPPD, or is it reversible? The effects don't seem to have gone away at all.