Just out of curiosity, if someone with Parkinson's did a few lines of cocaine, would they be able to to feel anything? I'm asking this, because since their whole Dopamine system is fucked, they technically can't feel any drug that functions via increase of Dopamine (opioids and stims), will they feel any drug with exception of serotonin related drugs like MDMA, since the effects of opioids and stimulants revolve around dopamine.
