Withdrawal from endogenous opiates.
D004723:Endorphins / Q000378:metabolism*; D006801:Humans; D009270:Naloxone / Q000031:analogs & derivatives*; D009271:Naltrexone / Q000494:pharmacology* / Q000627:therapeutic use; D012559:Schizophrenia / Q000188:drug therapy; D013375:Substance Withdrawal Syndrome / Q000139:chemically induced*
D004723:Endorphins; D009270:Naloxone; D009271:Naltrexone