i understand what you mean OP, i had one hellish of an experience in my early teens when i dosed way too much codeine, maybe 10-15 30mg pills as i was given them for free, and was opiate naive at the time, the only issue i had when it came on was the intense opiate itch, it was an itch i have never experienced, horrific, worse than anything in the world, and i was in a public place to so could not solve it. I'd go easy on dosing your codeine, as the itch from it is like no other opiate itch IMO, i've been taking opiates orally mainly for 5 years since, and haven't experienced an itch since, in any way i've dosed. Must've just been high doses of codeine.