Determining How the Nervous System Processes Pain in Adults With Fibromyalgia
| Status: | Completed |
|---|---|
| Conditions: | Arthritis, Fibromyalgia, Rheumatoid Arthritis, Pain |
| Therapuetic Areas: | Musculoskeletal, Rheumatology |
| Healthy: | No |
| Age Range: | 18 - 60 |
| Updated: | 4/21/2016 |
| Start Date: | April 2006 |
| End Date: | June 2011 |
Imaging the Cognitive Modulation of Pain
Fibromyalgia (FM) is a disabling chronic disorder characterized by widespread muscle pain,
fatigue, and multiple tender points, specific places on the body that become painful with
only slight pressure. Pain associated with FM cannot be explained medically, often leading
to a delayed diagnosis and delayed treatment. The purpose of this study is to evaluate how
the nervous system, specifically the brain, processes pain in women with FM.
fatigue, and multiple tender points, specific places on the body that become painful with
only slight pressure. Pain associated with FM cannot be explained medically, often leading
to a delayed diagnosis and delayed treatment. The purpose of this study is to evaluate how
the nervous system, specifically the brain, processes pain in women with FM.
The cause of FM remains unknown, and more than half of all FM patients do not experience
adequate pain relief from current treatment. Identifying the mechanisms of unexplained pain
in people with FM is necessary to develop more beneficial treatments. One possible cause of
FM may be associated with problems in how the body processes pain. People with FM appear to
be hypersensitive to stimuli that normally are not painful. Specifically, the brain and
spinal cord may not signal sensations correctly, resulting in abnormal pain sensations. This
study will use functional magnetic resonance imaging (fMRI) to examine how pain is processed
in the brain of adults with FM compared with adults with rheumatoid arthritis (RA), another
chronic disease characterized by long-term pain with a known cause. This study will also
determine the effect that anticipation and attention have on the processing of nonpainful
stimuli in women with FM and RA. Both groups of people will also be compared to a control
group of healthy people.
Participants in this study will include only women. This study will include two study visits
that will occur on separate days. Each study visit will last from 2 to 3 hours. During the
first study visit, participants will complete questionnaires. They will then rate heat
stimuli applied to their hand and perform mental tasks while in a mock MRI machine. The
mental tasks will consist of naming the color of words. Some participants will receive
nonpainful heat stimuli; others will receive both painful and nonpainful heat stimuli.
During the second study visit, participants will undergo the exact same procedures while in
an actual MRI machine. There will be no follow-up visits for this study.
adequate pain relief from current treatment. Identifying the mechanisms of unexplained pain
in people with FM is necessary to develop more beneficial treatments. One possible cause of
FM may be associated with problems in how the body processes pain. People with FM appear to
be hypersensitive to stimuli that normally are not painful. Specifically, the brain and
spinal cord may not signal sensations correctly, resulting in abnormal pain sensations. This
study will use functional magnetic resonance imaging (fMRI) to examine how pain is processed
in the brain of adults with FM compared with adults with rheumatoid arthritis (RA), another
chronic disease characterized by long-term pain with a known cause. This study will also
determine the effect that anticipation and attention have on the processing of nonpainful
stimuli in women with FM and RA. Both groups of people will also be compared to a control
group of healthy people.
Participants in this study will include only women. This study will include two study visits
that will occur on separate days. Each study visit will last from 2 to 3 hours. During the
first study visit, participants will complete questionnaires. They will then rate heat
stimuli applied to their hand and perform mental tasks while in a mock MRI machine. The
mental tasks will consist of naming the color of words. Some participants will receive
nonpainful heat stimuli; others will receive both painful and nonpainful heat stimuli.
During the second study visit, participants will undergo the exact same procedures while in
an actual MRI machine. There will be no follow-up visits for this study.
Inclusion Criteria:
- Diagnosis of FM or RA OR healthy
- Right-handed
Exclusion Criteria:
- Diagnosis of depression
- Using illegal drugs
- Claustrophobic
- Metal objects in body
- Require cardiovascular, high-dose antidepressant, or certain analgesic medications
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