Is Fibromyalgia All in Your Head?

If you live with fibromyalgia, you have probably heard some version of this: your tests are normal, so it must be stress, or anxiety, or something in your head. I hear it from patients every week. Fibromyalgia is not in your head. It is in your nervous system, your gut and the way your body moves blood and signals around. In my latest video I played two versions of myself to show how differently the same symptoms can be read. This post is the longer explanation, with the research behind each point.

Why do doctors say fibromyalgia is all in your head?

Because the standard tests are not built to see it. A blood panel looks for inflammation, infection and organ damage. Fibromyalgia is a disorder of how signals are processed, so the panel comes back normal and the patient is told nothing is wrong. Normal tests mean the tests did not find the problem. They do not mean there is no problem.

The biology is now hard to ignore. In 2026 a genetic study of more than 2.5 million people, 54,629 of them with fibromyalgia, identified 26 risk regions in the genome. The heritability of fibromyalgia was concentrated in brain tissue and nerve cells, and the authors concluded that the evidence defines fibromyalgia as a central nervous system disorder. The same study found strong genetic overlap between fibromyalgia, irritable bowel syndrome and post-traumatic stress disorder, with correlations above 0.7.^[1] It is a real, inherited sensitivity in the wiring.

Pain researchers call this nociplastic pain. Fibromyalgia is its prototype: the nervous system amplifies signals, so light touch can hurt and ordinary pain feels much larger. Activated immune cells in the spinal cord, called microglia, drive the inflammation behind this central sensitization.^[2] In Gut Brain Synchrony we spend a lot of time on exactly this: learning to read the pattern your body is showing instead of accepting a label that explains nothing.

What is the root cause of fibromyalgia pain?

When I look at someone in pain with fibromyalgia, I see patterns of signaling gases like nitric oxide being unevenly distributed through the body. We can correct this with movement, herbal medicine and breathwork.

Nitric oxide is a gas your blood vessels and nerves use to talk to each other. It opens vessels, carries pain signals and shapes inflammation. A 2022 review of fibromyalgia biology found that increased levels of pro-oxidative factors, including nitric oxide, lipid peroxidation and mitophagy, can sensitize pain. The same review described antioxidant approaches that reduce fibromyalgia symptoms, including dietary change and physical activity.^[3]

Chinese medicine described this centuries before anyone measured a gas. The classical phrase is simple: where there is free flow, there is no pain; where there is no free flow, there is pain. Qi and blood that pool in one place and starve another produce the wandering, shifting aches people with fibromyalgia describe. The treatment is to restore flow, not to mute the signal.

Why movement comes first

Gentle, rhythmic movement is the most reliable way to move blood and redistribute those signals. In a 52-week randomized trial published in the BMJ, 226 adults with fibromyalgia were assigned to Yang style tai chi or to aerobic exercise. All groups improved, but tai chi improved scores on the revised Fibromyalgia Impact Questionnaire more than aerobic exercise did, and at the same intensity and duration the difference was 16.2 points. Twenty-four weeks of tai chi beat twelve weeks. Tai chi also improved anxiety, self-efficacy and coping.^[4] If you want to start, my fibromyalgia decoded post walks through how the different kinds of fibromyalgia pain are read.

What is the link between fibromyalgia and IBS?

The link is the gut itself. Whether you are constipated, or you cannot control your bowels, an IBS label tells you what is happening, not why. What I usually find is a dysbiosis with an overgrowth of biofilm-forming microbes and a lack of gut motility.

The research lines up with this closely. In a double-blind study using the lactulose breath test, 42 of 42 people with fibromyalgia tested positive for small intestinal bacterial overgrowth, compared with 84 percent of people with IBS and 20 percent of controls. The more hydrogen their bacteria produced, the worse their body pain (r = 0.42).^[5] A later study sequenced the microbiomes of 77 women with fibromyalgia and 79 controls. Fibromyalgia explained the differences in gut bacteria better than any other factor measured, butyrate and propionate levels in the blood were different, and the microbiome alone identified who had fibromyalgia with an accuracy of 87.8 percent.^[6]

Biofilms and slow motility

Biofilms are sticky layers bacteria build to protect themselves. Endoscopists in Vienna and Erlangen examined 1,426 patients and found visible biofilms lining the gut in 57 percent of people with IBS, against 6 percent of controls. Under the microscope these were dense bacterial biofilms tied to a dysbiotic microbiome, including overgrowth of E. coli and Ruminococcus gnavus.^[7] Motility matters just as much. Overgrowth in the small intestine is often associated with slowed transit, which reduces the normal clearance of bacteria, and fibromyalgia is on the list of conditions associated with it.^[8] When the gut stops sweeping, microbes settle in and build.

What I use: prokinetics, Pinellia and your own hands

Botanical prokinetics get the gut moving again. Biofilm disruptors like Pinellia, Ban Xia in Chinese medicine, help break up the protected colonies. Abdominal self-massage helps a lot. Pinellia has a long history for nausea, fullness and phlegm-damp in the middle. In laboratory work it regulated the pacemaker activity of the interstitial cells of Cajal, the cells that set the rhythm of gut contraction, and reduced signs of motility disorder in mouse models.^[9] For massage, a randomized trial of 60 people with constipation found that adding abdominal massage lowered gastrointestinal symptom scores, especially constipation and abdominal pain, and increased bowel movements over eight weeks.^[10]

Is there a link between fibromyalgia and POTS?

Yes. If your blood pressure drops when you stand up, the answer is not to stay in your chair. Your autonomic tone needs to be reconditioned. We can track your improvement with an HRV monitor and by watching the shape of your tongue.

The overlap is large. A 2026 meta-analysis of 19 studies and 8,268 people with postural orthostatic tachycardia syndrome found fibromyalgia in 21.6 percent, IBS in 26.8 percent, anxiety in 42.9 percent, chronic fatigue in 40.9 percent and mast cell activation syndrome in 36.3 percent.^[11] These are not separate diseases that happen to stack up. They are one dysregulated system showing itself in different places. A 2026 review of fibromyalgia and dysautonomia found autonomic dysfunction in a substantial proportion of patients, including reduced heart rate variability, orthostatic intolerance and POTS, and listed HRV biofeedback and vagal approaches among the emerging treatments.^[12] A meta-analysis of small fibre testing estimated that 45 percent of people with fibromyalgia have autonomic small fibre impairment.^[13]

Tracking progress with HRV and the tongue

Heart rate variability is the beat-to-beat change in your heart rhythm, and it is a direct window into vagal tone. Across 26 studies and 3,641 people, those with chronic musculoskeletal pain had impaired vagal modulation, reduced overall variability and a shift toward sympathetic dominance.^[14] That makes HRV a number you can watch climb as your system reconditions. The tongue is the Chinese medicine version of the same feedback. A swollen tongue with tooth marks along the edges shows a weak, damp middle; as digestion and circulation recover, the body of the tongue firms up. Watching both gives you a modern measure and a classical one.

Why am I reacting to almost every food?

When someone tells me they can only tolerate three foods, I do not tell them to eat those three foods forever. What I see is a pattern of internal cold and damp. We work gently to restore the ability to eat a normal, diverse diet.

In Chinese medicine the Spleen and Stomach are the cooking pot of the body. They need warmth to transform food into usable qi and blood. When the fire under the pot is low, food sits, ferments and turns into dampness: heaviness, bloating, loose stools, brain fog and a body that seems to react to everything. Shrinking the diet only weakens the pot further. The answer is to warm and dry the middle, rebuild digestive strength, and reintroduce foods slowly as tolerance returns. A shrinking diet is a sign the terrain needs repair, not a permanent sentence.

Can childhood trauma cause fibromyalgia?

It can be a large part of it. Anxiety is always a symptom of a problem that needs to be identified and fixed. And when someone is exhausted, one of the first things I look at is whether they have been locked in fight or flight since childhood traumas.

A meta-analysis of 19 case-control studies found that every type of lifetime stressor studied was associated with adult fibromyalgia. The odds were highest for physical abuse (odds ratio 3.23) and total abuse (3.06), followed by sexual abuse (2.65), medical trauma (1.80), other lifetime stressors (1.70) and emotional abuse (1.52). The results held when childhood exposures were used.^[15] Recall that the genetic study above found fibromyalgia and post-traumatic stress disorder share much of their genetic architecture.^[1]

A nervous system that learned early that the world was unsafe keeps the alarm on. Cortisol, heart rate and muscle tension stay up, sleep stays shallow, digestion is turned down, and the body runs on reserves until there are none left. That is fatigue with a cause. In Chinese medicine this is the Heart and Kidney losing their connection: the spirit cannot settle, and the deep reserves drain. My trauma, cortisol and the nervous system protocol goes into this stage in detail.

How to start treating fibromyalgia at the root

Questions people ask

Is fibromyalgia pain all in your head?

No. The pain is real and the mechanism is physical: a sensitized nervous system, a disturbed gut and an autonomic system under strain. Genetic evidence from 2.5 million people places fibromyalgia in the central nervous system.^[1]

Does fibromyalgia cause dizziness?

It often comes with it. Dizziness on standing is a sign of autonomic dysfunction, which is common in fibromyalgia and overlaps with POTS.^[12] It is a reason to recondition autonomic tone, not to sit still.

Can gut problems cause fibromyalgia symptoms?

The gut is deeply involved. Bacterial overgrowth was found in every fibromyalgia patient in one breath-test study, and its severity tracked body pain.^[5] Restoring motility and a healthy microbiome is a central part of how I treat it.

Your symptoms are information. Read them as a pattern, and the pattern can change.

— Brehan Crawford, L.Ac.

References

1. Kerrebijn I, Bjornsdottir G, Arbabi K, et al. The genetic architecture of fibromyalgia across 2.5 million individuals. Nat Med. 2026;32(8):3060-3070. doi:10.1038/s41591-026-04492-6
2. Atta AA, Ibrahim WW, Mohamed AF, et al. Microglia polarization in nociplastic pain: mechanisms and perspectives. Inflammopharmacology. 2023;31(3):1053-1067. doi:10.1007/s10787-023-01216-x
3. Assavarittirong C, Samborski W, Grygiel-Górniak B. Oxidative stress in fibromyalgia: from pathology to treatment. Oxid Med Cell Longev. 2022;2022:1582432. doi:10.1155/2022/1582432
4. Wang C, Schmid CH, Fielding RA, et al. Effect of tai chi versus aerobic exercise for fibromyalgia: comparative effectiveness randomized controlled trial. BMJ. 2018;360:k851. doi:10.1136/bmj.k851
5. Pimentel M, Wallace D, Hallegua D, et al. A link between irritable bowel syndrome and fibromyalgia may be related to findings on lactulose breath testing. Ann Rheum Dis. 2004;63(4):450-452. doi:10.1136/ard.2003.011502
6. Minerbi A, Gonzalez E, Brereton NJB, et al. Altered microbiome composition in individuals with fibromyalgia. Pain. 2019;160(11):2589-2602. doi:10.1097/j.pain.0000000000001640
7. Baumgartner M, Lang M, Holley H, et al. Mucosal biofilms are an endoscopic feature of irritable bowel syndrome and ulcerative colitis. Gastroenterology. 2021;161(4):1245-1256.e20. doi:10.1053/j.gastro.2021.06.024
8. Efremova I, Maslennikov R, Poluektova E, et al. Epidemiology of small intestinal bacterial overgrowth. World J Gastroenterol. 2023;29(22):3400-3421. doi:10.3748/wjg.v29.i22.3400
9. Choi NR, Park J, Ko SJ, et al. Prediction of the medicinal mechanisms of Pinellia ternata Breitenbach, a traditional medicine for gastrointestinal motility disorders, through network pharmacology. Plants (Basel). 2022;11(10):1348. doi:10.3390/plants11101348
10. Lämås K, Lindholm L, Stenlund H, et al. Effects of abdominal massage in management of constipation: a randomized controlled trial. Int J Nurs Stud. 2009;46(6):759-767. doi:10.1016/j.ijnurstu.2009.01.007
11. Kulin D, Shah A, Fairlie T, et al. Gastrointestinal symptoms and systemic comorbidities in patients with POTS: a systematic review and meta-analysis. Neurogastroenterol Motil. 2026;38(4):e70305. doi:10.1111/nmo.70305
12. Quodling N, Hoffman N, Carrick FR, Jemni M. Fibromyalgia and dysautonomia: towards a neurophysiological framework for personalized management. Panminerva Med. 2026. doi:10.23736/S0031-0808.26.05437-6
13. Galosi E, Truini A, Di Stefano G. A systematic review and meta-analysis of the prevalence of small fibre impairment in patients with fibromyalgia. Diagnostics (Basel). 2022;12(5):1135. doi:10.3390/diagnostics12051135
14. Fernández-Morales C, Espejo-Antúnez L, Rubio-Fernández S, et al. Which moderating factors influence autonomic imbalance in chronic musculoskeletal pain? A domain-specific systematic review and multilevel meta-regression of heart rate variability. Pain. 2026;167(7):1524-1537. doi:10.1097/j.pain.0000000000003958
15. Kaleycheva N, Cullen AE, Evans R, et al. The role of lifetime stressors in adult fibromyalgia: systematic review and meta-analysis of case-control studies. Psychol Med. 2021;51(2):177-193. doi:10.1017/S0033291720004547
16. Pellow K, Harrison J, Tucker P, Harper B. Effectiveness of non-invasive vagus nerve stimulation vs heart rate variability biofeedback interventions for chronic pain conditions: a systematic review. Scand J Pain. 2025;25(1). doi:10.1515/sjpain-2024-0037