Featured Research

from universities, journals, and other organizations

Pleasure, pain brain signals disrupted in fibromyalgia patients

Date:
November 5, 2013
Source:
Wiley
Summary:
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 suggest that this altered brain processing might contribute to widespread pain and lack of response to opioid therapy in patients with fibromyalgia.

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.

Related Articles


Fibromyalgia is a chronic, musculoskeletal syndrome characterized by widespread joint and muscle pain along with other symptoms such as fatigue, sleep disturbances, and cognitive difficulty. Previous research estimates that fibromyalgia affects 3.4% of women and 0.5% of men in the U.S. Prevalence of this pain disorder increases with age, affecting more than 7% of women between 60 and 79 years of age.

"In patients with fibromyalgia there is an alteration in the central nervous system pain processing and a poor response to topical pain treatments, trigger point injections and opioids," said lead author Dr. Marco Loggia from Massachusetts General Hospital and Harvard Medical School in Boston. "Our study examines the disruption of brain function involved in the individual experience of pain anticipation and pain relief."

For the present study, the research team enrolled 31 patients with fibromyalgia and 14 healthy controls. Functional magnetic resonance imaging (MRI) and cuff pressure pain stimuli on the leg were performed on all subjects. During the MRI, participants received visual cues alerting them of impending pain onset (pain anticipation) and pain offset (relief anticipation).

Results show that during pain anticipation and relief, fibromyalgia patients displayed less robust response within brain regions involved in sensory, affective, cognitive and pain regulating processes. The ventral tegmental area (VTA) -- a group of neurons in the center of the brain involved in the processing of reward and punishment -- displayed activation during pain anticipation and stimulation, but deactivation during anticipation of relief in healthy controls. In contrast, VTA responses during periods of pain, and anticipation of pain and relief, in fibromyalgia patients were significantly reduced or inhibited.

Dr. Loggia concludes, "Our findings suggest that fibromyalgia patients exhibit altered brain responses to punishing and rewarding events, such as expectancy of pain and relief of pain. These observations may contribute to explain the heightened sensitivity to pain, as well as the lack of effectiveness of pain medications such as opioids, observed in these patients. Future studies should further investigate the neurochemical basis underlying these dysfunctions."


Story Source:

The above story is based on materials provided by Wiley. Note: Materials may be edited for content and length.


Journal Reference:

  1. Marco L. Loggia, Chantal Berna, Jieun Kim, Christine M. Cahalan, Randy L. Gollub, Ajay D. Wasan, Richard E. Harris, Robert R. Edwards and Vitaly Napadow. Disrupted Brain Circuitry for Pain-Related Reward/Punishment in Fibromyalgia. Arthritis & Rheumatism, November 2013

Cite This Page:

Wiley. "Pleasure, pain brain signals disrupted in fibromyalgia patients." ScienceDaily. ScienceDaily, 5 November 2013. <www.sciencedaily.com/releases/2013/11/131105081519.htm>.
Wiley. (2013, November 5). Pleasure, pain brain signals disrupted in fibromyalgia patients. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2013/11/131105081519.htm
Wiley. "Pleasure, pain brain signals disrupted in fibromyalgia patients." ScienceDaily. www.sciencedaily.com/releases/2013/11/131105081519.htm (accessed October 24, 2014).

Share This



More Health & Medicine News

Friday, October 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Doctor in NYC Quarantined With Ebola

Doctor in NYC Quarantined With Ebola

AP (Oct. 24, 2014) An emergency room doctor who recently returned to the city after treating Ebola patients in West Africa has tested positive for the virus. He's quarantined in a hospital. (Oct. 24) Video provided by AP
Powered by NewsLook.com
Breakfast Debate: To Eat Or Not To Eat?

Breakfast Debate: To Eat Or Not To Eat?

Newsy (Oct. 23, 2014) Conflicting studies published in the same week re-ignited the debate over whether we should be eating breakfast. Video provided by Newsy
Powered by NewsLook.com
Ebola Fears Keep Guinea Hospitals Empty

Ebola Fears Keep Guinea Hospitals Empty

AP (Oct. 23, 2014) Fears of Ebola are keeping doctors and patients alike away from hospitals in the West African nation of Guinea. (Oct. 23) Video provided by AP
Powered by NewsLook.com
Despite Rising Death Toll, Many Survive Ebola

Despite Rising Death Toll, Many Survive Ebola

AP (Oct. 23, 2014) The family of a Dallas nurse infected with Ebola in the US says doctors can no longer detect the virus in her. Despite the mounting death toll in West Africa, there are survivors there too. (Oct. 23) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins