you do not have hppd from weed. (Hallucinogen persisting perception disorder).
"there is no evidence to support that marijuana causes any brain damage or developmental problems
http://www.erowid.org/plants/cannabis/cannabis_myth8.shtml
if you read the link you will see why.
here is a part of the article:
'The original basis of this claim was a report that, upon postmortem examinations, structural changes in several brain regions were found in two rhesus monkeys exposed to THC. 51 Because these changes primarily involved the hippocampus, a cortical brain region known to play an important role in learning and memory, this finding suggested possible negative consequences for human marijuana users.
Additional studies, employing rodents, reported similar brain changes.
However, to achieve these results, massive doses of THC - up to 200 times the psychoactive dose in humans - had to be given . In fact, studies employing 100 times the human dose have failed to reveal any damage. 52
In the most recently published study, rhesus monkeys were exposed through face-mask inhalation to the smoke equivalent of four to five joints per day for one year. When sacrificed seven months later, there was no observed alteration of hippocampal architecture, cell size, cell number, or synaptic configuration. The authors conclude:
"while behavioral and neuroendocrinal effects are observed during marijuana smoke exposure in the monkey, residual neuropathological and neurochemical effects of marijuana exposure were not observed seven months after the year-long marijuana smoke regimen." 53
Thus, 20 years after the first report of brain damage in two marijuana-exposed monkeys, the claim of damage to brain cells has been effectively disproven.'
no hppd from weed