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acute pain
paint that is sudden in onset, usually subsides when treated, and typically occurs over less than a 6 week period
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addiction
- a primary, chronic, neurobiologic disease whose development is influenced by genetic, psychosocial, and environmental factors
- same as psychologic dependence
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adjuvant analgesic drugs
drugs that are added as a second drug for combined therapy with a primary drug and may have additive or independent analgesic properties or both
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agonist
substance that binds to a receptor and causes a response
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agonists-antagonists
- substances that bind to a receptor and cause a partial response that is not as strong as that caused by an agonists
- also known as a partial agonist
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analgesics ceiling effect
what occurs when a given pain drug no longer effectively controls a patient's pain despite the administration of the highest safe dosages
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antagonist
a drug that binds to a receptor and prevents (blocks) a response
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analgesics
- medications that relieve pain without causing loss of consciousness
- painkillers
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breakthrough pain
pain that occurs between doses of pain medications
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cancer pain
pain resulting form any of a variety of causes related to cancer and/or the metastasis of cancer
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central pain
pain resulting from any disorder that causes central nervous system damage
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chronic pain
- persistent or recurring pain that is often difficult to treat
- includes any pain lasting longer than 3 to 6 months, pain lasting longer than 1 month after healing of an acute tissue injury or pain that accompanies a nonhealing tissue injury
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deep pain
- pain that occurs in tissues below skin level
- opposite of superficial pain
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gate theory
- most common and well-described theory of pain transmission and pain relief
- uses a gate model to explain how impulses from damaged tissues are sensed in the brain
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narcotics
medically used controlled substances and in legal settings to refer to any illicit or street drugs
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neuropathic pain
pain that results for a disturbance of function or pathologic change in a nerve
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nocieption
processing of pain signals in the brain that gives rise to the feeling of pain
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nocieptors
subclass of sensory nerves that transmit pain signals to the CNS from other body parts
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nonopioid analgesics
analgesics that aren't classified as opioids
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NSAIDs
large, chemically diverse group of drugs that are analgesics and also possess anti-inflammatory and antipyretic activity but aren't steroids
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opioid analgesics
synthetic drugs that bind to opiate receptors to relieve pain but aren't themselves derived from the opium plant
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opioid naive
describes patients who are receiving opioid analgesics fro the first time and who therefore aren't accustomed to their effects
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opioid tolerance
- normal physiologic condition that results form long-term opioid use, in which larger doses of opioids are required to maintain the same level of analgesia and in which abrupt discontinuation of the drug results in withdrawal symptoms
- same as physical dependence
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opioid tolerant
- opposite of opioid naive
- escribes patients who have been receiving opioid analgesics for a period of time and who are therefore at greater risk of opioid withdrawal syndrome upon sudden discontinuation of opioid use
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opioid withdrawal
signs of symptoms associated with abstinence from or withdrawal of an opioid analgesic when the body has become physically dependent on the substance
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pain
unpleasant sensory and emotional experience associated with actual or potential tissue damage
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pain threshold
level of a stimulus that results in the sensation of pain
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referred pain
pain occurring in an area away from the organ of origin
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somatic pain
pain that originates from skeletal muscles, ligaments, or joints
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special pain situations
general term for pain control situations that are complex and whose treatment typically involves multiple medications, various health care personnel, and nonpharmacologic therapeutic modalities
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superficial pain
pain that originates from the skin or mucous membranes
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synergistic effects
drug interactions in which the effect of a combo of two or more drugs with similar actions is greater than the sum of the individual effects of the same drugs given alone
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tolerance
the general term for a state of adaption in which repetitive exposure to a given drug, over time, induces changes in drugs receptor that reduce one or more of the drug's effects
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vascular pain
pain that results from a pathology of the vascular or perivascular tissues
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visceral pain
pain that originates from organs or smooth muscles
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world health organizations
an international body of health care professionals, including clinicians and epidemiologists among many others, that studies and responds to health needs and trends worldwide
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