Author: Glossary

  • Orap

    Brand name for the conventional antipsychotic drug pimozide.  

  • Opioid-related disorders

    In dsm-iv-tr, a group of mental disorders that includes opioid dependence; opioid abuse; opioid intoxication; opioid withdrawal; opioid intoxication delirium; opioidinduced psychotic disorder, with delusions or hallucinations; opioidinduced mood disorder; opioid-induced sexual dysfunction; and opioid-induced sleep disorder.  

  • Opioid antagonists

    Substances such as naloxone and naltrexone, which occupy opioid receptors but do not activate them. Opioid antagonists are used in the treatment of opiate overdose and alcoholism. An exceptional class of pharmaceutical substance, referred to as a receptor antagonist, demonstrates its influential mechanism of action by specifically targeting the opioid receptors in the human body.…

  • Opiate dependence

    The addiction to heroin and other related substances, such as codeine, morphine, meperidine (Demerol), or hydromorphone (Dilaudid).  

  • Ophidiophobia

    Ophidiophobia

    The fear of snakes.  

  • Operant conditioning (instrumental conditioning)

    A form of behaviorism and behavior modification in which the likelihood of a specific behavior is increased or decreased based on positive or negative reinforcement when the behavior is exhibited. A process by which the results of the person’s behavior determine whether the behavior is more or less likely to occur in the future. The…

  • Ontogenetic

    Pertaining to the development of the individual. Contrast with phylogenetic.  

  • Onanism

    Coitus interruptus. The term is sometimes incorrectly used interchangeably with masturbation. Withdrawal of the penis from the vagina before ejaculation. Coitus interruptus; withdrawal before ejaculation. The term is erroneously used to designate masturbation.  

  • Olanzapine–fluoxetine combination

    A compound medication—consisting of olanzapine (an atypical antipsychotic) and fluoxetine (a selective serotonin reuptake inhibitor)—indicated for the acute treatment of depressive episodes associated with treatment-resistant depression and bipolar i disorder in adults. Marketed under the brand name symbyax.  

  • Olanzapine

    An atypical antipsychotic medication approved for the treatment of schizophrenia and for acute and maintenance treatment of bipolar disorder. Marketed under the brand name zyprexa. An antipsychotic drug. Olanzapine (Zyprexa) is used to treat the symptoms of schizophrenia. It is unclear how olanzapine works, although it is known to have several effects on the neurotransmitters…