[decimon]

I recall reading of some very bad “designer drug” on the Left Coast that was producing Parkinsons-like symptoms that didn’t seem to wane over time. Possibly this toxin was accidentally produced?

I'm really in over my head here but I believe that some drugs deliver their high in affecting dopamine levels.

[Silentgypsy]

I read something pertaining to cocaine producing a horrible crash because it depleted the person’s dopamine stores. That was a long time ago, though.