Pain and chronic conditions

Fibromyalgia

Expert-reviewed guidance on fibromyalgia — what the diagnosis actually means, why exercise helps, and how to start when everything hurts.

  • Expert Reviewed
  • Evidence Based
  • Patient Focused

Dr. Eva Lassey, PT, DPT reviewed the exercise, movement, and rehabilitation content in this article. Information on diagnosis and medical management follows published guidance from the sources listed at the foot of this page. · View bio → · Last updated August 27, 2026

Ages covered on this page: Adults

Fibromyalgia is a recognized, long-lasting condition involving widespread pain, persistent fatigue, unrefreshing sleep, and difficulty with concentration and memory.⁠1 It is not a label applied when nothing else is found — it has diagnostic criteria and is identified on the basis of a characteristic pattern of symptoms, though doctors usually check for other conditions that look similar.⁠2,3 The underlying mechanism involves changes in how the nervous system processes pain signals, so people with it feel pain when others would not.⁠1 That is a physical change, not an imagined one. Exercise has the strongest evidence of any single treatment,⁠4 which is difficult to hear when movement hurts and exhaustion is constant — so how it's introduced matters enormously.

What is fibromyalgia? How it works and its main symptoms

Not a disease of the muscles or joints, despite where the pain is felt: the joints are not damaged, and it is not an inflammatory or autoimmune disease.⁠5,6

The current understanding centers on central sensitization — the nervous system becomes more responsive to signals, so ordinary input is processed as painful, and painful input is amplified. The volume control is turned up, and it stays up. Brain imaging and other research have found altered signaling in the nerve pathways that carry pain — a physical finding, not a way of describing pain without a cause.⁠1,5

  • Widespread pain — in many areas of the body, lasting at least three months⁠5
  • Fatigue that isn't relieved by rest
  • Unrefreshing sleep — waking as tired as when you went to bed
  • Cognitive difficulty — problems with concentration, thinking clearly, and memory, often described as fibro fog⁠1

Frequently alongside: headaches · irritable bowel symptoms · sensitivity to noise, light, temperature, or touch · low mood and anxiety · stiffness, particularly in the morning.⁠1,5

Sensitivity reaches beyond pain: people with fibromyalgia find everyday sounds, lights and touch more unpleasant than others do, and brain imaging shows altered processing of these non-painful sensations.⁠8 → Sensory processing differences in adults

Is fibromyalgia real? Why normal tests don't mean nothing is wrong

Worth saying directly, because it's the barrier that comes before treatment.

People with fibromyalgia are frequently disbelieved — by clinicians, colleagues, and families, largely because the symptoms can't be seen.⁠9 Normal blood tests and normal scans are interpreted as evidence that nothing is wrong.

They're evidence that a different thing is wrong. Fibromyalgia doesn't produce abnormal inflammatory markers or visible tissue damage, because that isn't the mechanism.⁠6 The absence of those findings is expected, not reassuring in the way it's usually intended.

Psychological factors influence fibromyalgia, as they influence all pain. That is not the same as the pain being psychological, and anyone who conflates the two has misunderstood the evidence.

How is fibromyalgia diagnosed?

Clinically, on the pattern and duration of symptoms — widespread pain alongside fatigue, unrefreshing sleep, or cognitive symptoms, present for at least three months. The current criteria no longer require other conditions to be excluded first, and fibromyalgia often occurs alongside other rheumatic diseases.⁠3,5

Diagnostic criteria have been revised several times, moving away from the older tender-point examination toward assessment of pain distribution combined with symptom severity.⁠3,10 Ask your clinician which criteria they are working from.

Tests are used to exclude other conditions, not to confirm fibromyalgia. Normal results are consistent with the diagnosis.⁠2,5

What helps fibromyalgia? Exercise, sleep and other treatments

Exercise has the strongest evidence of any single intervention⁠4 — and this is the hardest thing to tell someone who is exhausted and hurting. Two things make it workable.

  • Start well below what you think you can do. The instinct is to test your limit. The recommended approach is to start at a low level and build gradually — find a level you can sustain on a bad day and build from there.⁠2 → Pacing and activity management
  • Increase by time, not by feel. Doing too much on a good day can make symptoms worse, so plan the increases in advance.⁠2

What kind: low-impact aerobic activity — walking, cycling, swimming, water-based exercise — is especially helpful.⁠2 Strength training also has support,⁠11 and so does exercise in a pool.⁠12

  • Sleep. Unrefreshing sleep is both a core symptom and a possible trigger of fibromyalgia, and a regular sleep routine is worth working on directly. Sleep apnea is worth excluding — a sleep study can find it, and it has its own treatment.⁠2,5
  • Education. Learning how the condition works is where treatment starts, and guidelines put it first.⁠2,4
  • Psychological therapies — cognitive behavioral therapy can help, especially combined with other treatment.⁠2,4 Offered because they help manage a real condition, not because the pain is psychological.
  • Medication, discussed with your doctor. Several classes are used, including some antidepressants and anti-seizure medicines. Anti-inflammatory painkillers are usually not effective, because fibromyalgia does not cause tissue inflammation, and opioids are best avoided.⁠2,5
  • Combined approaches — treatment usually combines exercise, education, psychological support and medication, and a multidisciplinary rehabilitation program is an option where disability is severe.⁠2,4

RelatedFind a physical therapist

Fibromyalgia treatment goals, with examples

Walk 15 minutes four days a week without paying for it the next day · Work a full week without needing to stop · Cook dinner most evenings · Sleep through the night twice a week · See friends every two weeks

Reduce pain · Improve fatigue

Note the phrasing "without paying for it the next day." The next-day cost is worth building into a goal, because it's the part that gets left out.

Frequently Asked Questions

Will it go away?

Fibromyalgia is long-lasting, there is no cure, and symptoms fluctuate. Treatment focuses on relieving symptoms and improving function and quality of life, and regular exercise is one of the most useful ways to manage it.⁠2

What is fibro fog?

Difficulty with concentration, thinking clearly, and memory. It's a recognized feature of the condition and not a separate problem.⁠1

Is fibromyalgia real?

Yes. It's a recognized condition with diagnostic criteria, and research has found altered signaling in the nerve pathways that carry pain. Normal blood tests and scans are expected — they reflect the mechanism rather than the absence of a problem.⁠1,6

Why are my tests normal?

Because fibromyalgia doesn't involve inflammation or tissue damage. Tests are used to exclude other conditions, not to confirm fibromyalgia, and normal results are consistent with the diagnosis.⁠2,6

Could it be something else?

Several conditions produce similar symptoms — thyroid disease, inflammatory and autoimmune conditions such as rheumatoid arthritis and lupus, and sleep apnea. These should be assessed, and new or different symptoms warrant assessment on their own terms.⁠5,6

Should I exercise if it hurts?

Exercise has the strongest evidence of any single treatment, but how it's introduced matters. Start at a low level, increase gradually by planned amounts rather than by how you feel, and avoid doing too much on good days.⁠2,4

Does stress cause fibromyalgia?

Psychological factors influence fibromyalgia, as they influence all pain — but that isn't the same as the condition being psychological. Both things can be true, and conflating them is a misreading of the evidence.

Why is my sleep so unrefreshing with fibromyalgia?

Unrefreshing sleep is both a core symptom and a possible trigger of fibromyalgia, and a regular sleep routine is worth working on directly. Sleep apnea is worth excluding — a sleep study can find it, and it has its own treatment.⁠2,5

Conditions and pages that commonly come up alongside fibromyalgia.

Persistent pain

The wider picture on long-term pain, and what treatment can realistically offer.

Learn more →

Persistent low back pain

When back pain lasts beyond three months, the approach changes.

Learn more →

Pacing and activity management

How to find a level you can sustain on a bad day, and build from there.

Learn more →

Sensory processing in adults

Sensitivity to everyday sound, light and touch in adults.

Learn more →

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Sources

  1. National Institute of Arthritis and Musculoskeletal and Skin Diseases. Fibromyalgia Symptoms, Causes, & Risk Factors. Checked October 6, 2026.
    Show the passageHide the passage
    A “chronic (long-lasting) disorder that causes pain and tenderness throughout the body, as well as fatigue and trouble sleeping”; other symptoms include stiffness, “fibro fog” and sensitivity to light, noise, odors and temperature; people with it “feel pain when others do not,” and research has found “altered signaling in neural pathways that transmit and receive pain.”
  2. National Institute of Arthritis and Musculoskeletal and Skin Diseases. Fibromyalgia: Diagnosis, Treatment, and Steps to Take. Checked October 6, 2026.
    Show the passageHide the passage
    No specific laboratory or imaging test; doctors rule out other causes. Exercise: “start exercising at a low level and gradually increase over time,” low-impact aerobic activity is “especially helpful”; cognitive behavioral therapy helps, “especially when combined with other types of treatment”; “Anti-inflammatory pain medications are usually not effective because fibromyalgia does not cause tissue inflammation”; “doing too much can make your symptoms worse.”
  3. Wolfe F, Clauw DJ, Fitzcharles MA, et al. 2016 revisions to the 2010/2011 fibromyalgia diagnostic criteria. Seminars in Arthritis and Rheumatism. 2016;46(3):319–329. doi:10.1016/j.semarthrit.2016.08.012 (PMID 27916278). The revision “eliminates the previously confusing recommendation regarding diagnostic exclusions” and adds a generalized pain criterion; the physician-based criteria are valid for individual diagnosis.
  4. Macfarlane GJ, Kronisch C, Dean LE, et al. EULAR revised recommendations for the management of fibromyalgia. Annals of the Rheumatic Diseases. 2017;76(2):318–328. doi:10.1136/annrheumdis-2016-209724 (PMID 27377815). “The only ‘strong for’ therapy-based recommendation in the guidelines was exercise”; initial management should involve patient education, with psychological therapies, medication and multimodal rehabilitation (for severe disability) as weaker, tailored options.
  5. MedlinePlus Medical Encyclopedia (National Library of Medicine). Fibromyalgia. Checked October 6, 2026.
    Show the passageHide the passage
    Diagnosis needs “at least 3 months of widespread pain” with sleep problems, fatigue or thinking problems; blood, urine and imaging results are normal and are used to check for other conditions; hypothyroidism and sleep disorders have similar symptoms, and a sleep study can find sleep apnea; fibromyalgia is common in every rheumatic disease; opioids “should be avoided.”
  6. American College of Rheumatology. Fibromyalgia (patient information). “Fibromyalgia is not an inflammatory or autoimmune disease”; “It does not cause any abnormalities on x-rays or blood tests”; tests can check for other causes, “like thyroid problems or diseases that are driven by inflammation.” Checked October 6, 2026.
  7. National Institute of Arthritis and Musculoskeletal and Skin Diseases. Rheumatoid Arthritis Symptoms, Causes, & Risk Factors. Lists “Joint stiffness that lasts longer than 30 minutes, typically after waking in the morning” as a symptom of rheumatoid arthritis. Checked October 6, 2026.
  8. López-Solà M, Pujol J, Wager TD, et al. Altered functional magnetic resonance imaging responses to nonpainful sensory stimulation in fibromyalgia patients. Arthritis & Rheumatology. 2014;66(11):3200–3209. doi:10.1002/art.38781 (PMID 25220783). Women with fibromyalgia reported everyday sounds, sights and touch as more unpleasant than controls did, and their brain responses to these non-painful stimuli were altered in ways linked to core symptoms.
  9. Colombo B, Zanella E, Galazzi A, Arcadi P. The experience of stigma in people affected by fibromyalgia: a metasynthesis. Journal of Advanced Nursing. 2025;81(10):6317–6332. doi:10.1111/jan.16773 (PMID 39835578). Twelve qualitative studies: “Stigma arises from disbelief due to the invisibility of symptoms,” met from health care professionals, family, friends and colleagues.
  10. Wolfe F, Clauw DJ, Fitzcharles MA, et al. The American College of Rheumatology preliminary diagnostic criteria for fibromyalgia and measurement of symptom severity. Arthritis Care & Research. 2010;62(5):600–610. doi:10.1002/acr.20140 (PMID 20461783). Criteria that “do not require a tender point examination,” combining a widespread pain index with a symptom severity scale.
  11. Busch AJ, Webber SC, Richards RS, et al. Resistance exercise training for fibromyalgia. Cochrane Database of Systematic Reviews. 2013;(12):CD010884. doi:10.1002/14651858.CD010884 (PMID 24362925). Low-quality evidence that moderate to high-intensity resistance training improves function, pain, tenderness and strength in women with fibromyalgia, and can be done safely.
  12. Bidonde J, Busch AJ, Webber SC, et al. Aquatic exercise training for fibromyalgia. Cochrane Database of Systematic Reviews. 2014;(10):CD011336. doi:10.1002/14651858.CD011336 (PMID 25350761). Low to moderate quality evidence that “aquatic training is beneficial for improving wellness, symptoms, and fitness in adults with fibromyalgia.”

Medical disclaimer. This page is for general educational purposes and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your individual situation.