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Opioid-induced hyperalgesia (OIH) or opioid-induced abnormal pain sensitivity, also called paradoxical hyperalgesia, is an uncommon condition of generalized pain caused by the long-term use of high dosages of opioids [1] such as morphine, [2] oxycodone, [3] and methadone. [4][5] OIH is not necessarily confined to the original affected site. [6]
Hyperalgesia. Hyperalgesia (/ ˌhaɪpərælˈdʒiːziə / or /- siə /; hyper from Greek ὑπέρ (huper) 'over' + -algesia from Greek ἄλγος (algos) 'pain') is an abnormally increased sensitivity to pain, which may be caused by damage to nociceptors or peripheral nerves and can cause hypersensitivity to stimulus.
Long-term opioid use can cause opioid-induced hyperalgesia, which is a condition in which the patient has increased sensitivity to pain. [ 95 ] All of the opioids can cause side effects. [ 64 ]
Opioid use disorder (OUD) is a substance use disorder characterized by cravings for opioids, continued use despite physical and/or psychological deterioration, increased tolerance with use, and withdrawal symptoms after discontinuing opioids. [ 12 ] Opioid withdrawal symptoms include nausea, muscle aches, diarrhea, trouble sleeping, agitation ...
Fentanyl is a highly potent synthetic piperidine opioid primarily used as an analgesic. It is 20 to 40 times more potent than heroin and 100 times more potent than morphine; [9] its primary clinical utility is in pain management for cancer patients and those recovering from painful surgeries. [10][11] Fentanyl is also used as a sedative. [12]
An opioid overdose is toxicity due to excessive consumption of opioids, such as morphine, codeine, heroin, fentanyl, tramadol, and methadone. [3][5] This preventable pathology can be fatal if it leads to respiratory depression, a lethal condition that can cause hypoxia from slow and shallow breathing. [3] Other symptoms include small pupils ...
TIVA techniques which involve the continued administration of opioids (e.g. remifentanil) at high doses can cause opioid-induced hyperalgesia. [52] This may lead to difficult postoperative pain control, as patients with hyperalgesia experience increased chronic pain and require more analgesics following surgery. [51]
An opiate is an alkaloid substance derived from opium (or poppy straw). [1] It differs from the similar term opioid in that the latter is used to designate all substances, both natural and synthetic, that bind to opioid receptors in the brain (including antagonists). [2] Opiates are alkaloid compounds naturally found in the opium poppy plant ...