Hyperalgesia News and Research

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Short and long surgical incisions linked to increased pain after cesarean delivery

Both short and long surgical incisions for cesarean births are associated with increased pain after delivery, suggests a study being presented at the ANESTHESIOLOGY 2017 annual meeting.

23 Oct 2017

Research on naked mole-rats could pave way for new human pain therapies

In injuries and inflammation, naked mole-rats do not develop normal hypersensitivity to temperature stimuli.

12 Oct 2016

1 in 4 people with histories of nicotine use, substance abuse likely to use opioid painkillers long-term

Opioid painkiller addiction and accidental overdoses have become far too common across the United States. To try to identify who is most at risk, Mayo Clinic researchers studied how many patients prescribed an opioid painkiller for the first time progressed to long-term prescriptions. The answer: 1 in 4. People with histories of tobacco use and substance abuse were likeliest to use opioid painkillers long-term.

2 Jul 2015

Canadian researchers shed light on molecular dynamics of chronic pain

Chronic pain affects hundreds of millions of people worldwide and is a major cause of disability, causing more disability than cancer and heart disease. Canadian researchers, including Michael Salter at SickKids are shedding light on the molecular dynamics of chronic pain. They have uncovered a critical role for a class of cells present in the brain and spinal cord, called microglia, in pain.

27 May 2015

Mesenchymal stem cell transplantation reduces opioid tolerance, opioid-induced pain

Mesenchymal stem cell (MSC) transplantation reduced opioid tolerance and opioid-induced hyperalgesia caused by daily morphine injections in rats, according to new research.

25 Mar 2015

International study shows potential new therapy to treat patients with neuropathic pain

An international study led by scientists at McGill University reports, for the first time, that drugs that selectively target the melatonin MT2 receptor represent a novel class of analgesic drugs that could be used to treat patients with neuropathic pain.

19 Feb 2015

Adding common epilepsy drug to morphine can result in better pain control, say IU researchers

Adding a common epilepsy drug to a morphine regimen can result in better pain control with fewer side effects. Moreover, the combination can reduce the dosage of the opioid needed to be effective, according to a team of pain researchers at Indiana University.

17 Sep 2014

FDA approves Targiniq ER to treat severe pain

Today, the U.S. Food and Drug Administration approved Targiniq ER (oxycodone hydrochloride and naloxone hydrochloride extended-release tablets), an extended-release/long-acting (ER/LA) opioid analgesic to treat pain severe enough to require daily, around-the-clock, long-term opioid treatment and for which alternative treatment options are inadequate.

24 Jul 2014

2014 PAINWeekEnd Regional Conference to highlight health crises of inadequate pain management

There are 116 million people in pain. There are 4,000 pain specialists. That's 29,000 patients per pain specialist. There are simply not enough pain specialists to go around.

9 Apr 2014

Opioid receptor-triggered spinal mTORC1 activation contributes to morphine tolerance, hyperalgesia

Currently, opioids are the standard treatment for chronic pain. Patients on opioids for long periods of time become desensitized to these drugs or become paradoxically hypersensitive to pain (hyperalgesia); however, the adaptive mechanisms are not well understood.

3 Jan 2014

Transient receptor potential channel A1 causes calcitonin gene-related peptide release in neurons

Transient receptor potential channel A1 is one of the important transducers of noxious stimuli in the primary afferents, which may contribute to generation of neurogenic inflammation and hyperalgesia.

26 Dec 2013

Molecular mechanisms underlying effects of acupuncture on neuropathic pain

Peripheral or central nerve injury often leads to neuropathic pain, a chronic condition that can manifest behaviorally as spontaneous pain, hyperalgesia and allodynia, and which also results in neurological dysfunction.

6 Nov 2013

Disruption of brain signals contributes to increased pain sensitivity in fibromyalgia patients

New research indicates that a disruption of brain signals for reward and punishment contributes to increased pain sensitivity, known as hyperalgesia, in fibromyalgia patients. Results published in Arthritis & Rheumatism, a journal of the American College of Rheumatology, suggest that this altered brain processing might contribute to widespread pain and lack of response to opioid therapy in patients with fibromyalgia.

5 Nov 2013

AAPM commends FDA’s move to introduce labeling changes on ER/LA opioids

The physicians of the American Academy of Pain Medicine (AAPM) hailed long-awaited labeling changes and other steps taken by the U.S. Food and Drug Administration (FDA) last week to enhance safety in the prescribing of extended-release and long-acting (ER/LA) opioids.

18 Sep 2013

Safety labeling changes announced for extended-release and long-acting opioid analgesics

The U.S. Food and Drug Administration today announced class-wide safety labeling changes and new postmarket study requirements for all extended-release and long-acting opioid analgesics intended to treat pain.

11 Sep 2013

Dexmedetomidine may be an effective treatment option for opioid-induced hyperalgesia

Surgical patients who demonstrated heightened pain sensitivity, or hyperalgesia, induced by high doses of a synthetic opioid had their symptoms alleviated by co-treatment with dexmedetomidine, according to new research. Study investigators, who presented their results today at the 29th Annual Meeting of the American Academy of Pain Medicine, concluded that dexmedetomidine may be a new and effective treatment option for opioid-induced hyperalgesia (OIH).

12 Apr 2013

Study shows genetic variant reduces pain severity associated with sexual assault

One in five U.S. women are sexually assaulted in their lifetimes and more than half experience severe pain during the week following an attack.

11 Apr 2013

Researchers discover new pathway to reduce paradoxical pain

For individuals with agonizing pain, it is a cruel blow when the gold-standard medication actually causes more pain. Adults and children whose pain gets worse when treated with morphine may be closer to a solution, based on research published in the January 6 on-line edition of Nature Neuroscience.

7 Jan 2013

Study evaluates distribution and severity of pain in sexual assault victims

A majority of sexual assault victims experience severe pain in the early aftermath of the crime but less than a third of these victims receive pain medications, according to research in The Journal of Pain, the peer review publication of the American Pain Society.

12 Sep 2012

Potassium-channel autoimmunity linked to chronic pain

A substantial proportion of patients with voltage-gated potassium channel-complex autoimmunity experience chronic idiopathic pain, although the specific antigenic complex associated with pain remains to be determined, conclude US scientists.

3 Sep 2012