Cortical Electrical Stimulation & Fibromyalgia
Just back from this year’s American Academy of Pain Management meeting, where doctors shared new information about how to best recognize and treat a variety of chronic pain conditions. A particularly fascinating study described a new therapy, called cortical electrical stimulation, for the treatment of fibromyalgia.
What is fibromyalgia?
Fibromyalgia is a chronic pain condition where people have widespread pain, fatigue, sleep problems, and a variety of other symptoms. Mood problems, bowel complaints, and memory problems (called fibro fog) are also common. About half of people with fibromyalgia also have problem headaches, most commonly from migraine. Fibromyalgia can be treated with a variety of non-drug and drug treatments, although symptom relief from medications tends to be fairly modest. The most effective non-drug treatments are exercise and psychological pain management techniques.
What is cortical electrical stimulation?
Cortical electrical stimulation is a non-drug pain treatment where small amounts of electrical current are delivered to the head through electrodes. This current is believed to help correct imbalances in neurotransmitters that are important for pain signaling. Last year, researchers from Baylor College Medical Center reported small pain reduction in patients who had experienced spinal cord injuries after they were treated with cortical stimulation.
How can cortical electrical stimulation help with fibromyalgia?
Dr. Hargrove from Michigan State University and Kettering University and colleagues recently tested the benefits of using cortical electrical stimulation for patients with fibromyalgia. Nearly eighty patients with fibromyalgia were treated with twice weekly treatments lasting 11 minutes each for a total of 22 treatments. Half of the patients were randomly assigned to receive cortical stimulation. The other half received a placebo treatment, where they had electrodes placed without the stimulation turned on.
Here are the results:
- Average pain threshold increased by nearly two-thirds in patients receiving the cortical stimulation treatment.
- Among patients getting placebo treatments, they were actually a little bit more sensitive to pain at the end of the study. Their pain threshold dropped by four percent.
- Sleep improved significantly after cortical stimulation, with no change after placebo.
- Improvement in symptoms and reduction in disability were maintained during long-term follow-up lasting about one year.
- During long-term follow-up after completing cortical stimulation treatment, people were often able to reduce their reliance on pain medications.
Where can I learn more?
The results of Dr. Hargrove’s study have been published in:
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