Fibromyalgia: symptoms, causes, diagnosis, and treatment in one guide

Short answer

Fibromyalgia is a long-term condition in which the nervous system turns up pain signals, causing widespread pain, fatigue, unrefreshing sleep, and "fibro fog." It affects roughly 2% to 4% of people worldwide, more often women. No blood test or scan confirms it; doctors diagnose it with the 2016 revised fibromyalgia criteria (an update of the 2010 ACR criteria), and treatment starts with education and gradual exercise.

If you live with this kind of pain, you're not imagining it, and it is not weakness. Brain-imaging studies show that the same pressure produces more pain-related brain activity in people with fibromyalgia than in people without it. The pain is real. What differs is how loudly the nervous system reports it.

This guide is the hub for everything we have written about fibromyalgia. Each section gives you the essentials in plain language, backed by research, and points you to a deeper article when you want more: what fibromyalgia is, the full symptom picture, the old tender points and the newer criteria, causes and triggers, flares, sleep, the link with dysautonomia and HRV, treatment, exercise, and how to talk to your doctor.

Fibromyalgia at a glance

• What it is: a chronic pain condition driven mainly by changes in how the brain and spinal cord process pain, not by damage in the muscles or joints (doi.org).

• Core symptoms: chronic widespread pain, unrefreshing sleep, physical exhaustion, and trouble thinking or remembering (doi.org).

• How common: symptom surveys find it in about 2% to 4% of the general population, though far fewer people have actually been diagnosed (doi.org).

• How it's diagnosed: clinically, with the 2016 revised fibromyalgia criteria (an update of the 2010 American College of Rheumatology (ACR) criteria), which score widespread pain plus symptom severity (doi.org).

• How it's treated: education and non-drug approaches first; exercise is the only treatment with a "strong for" rating in European guidelines (doi.org).

• What it isn't: it is not an autoimmune disease, it doesn't damage joints or organs, and it is not "all in your head."

What is fibromyalgia?

Fibromyalgia is a condition of the pain-processing system. In many pain problems, the hurt comes from a clear source: an inflamed joint, a torn muscle, a pinched nerve. In fibromyalgia, the main change is in the nervous system itself. The brain and spinal cord become more reactive, so ordinary signals such as pressure, cold, or movement are amplified into pain. Researchers call this central sensitization — a state where the central nervous system turns the volume up on incoming signals.

A 2014 review in JAMA described fibromyalgia as either a discrete diagnosis or "a constellation of symptoms characterized by central nervous system pain amplification with concomitant fatigue, memory problems, and sleep and mood disturbances" (doi.org).

In 2016, pain researchers proposed a name for this kind of pain, which the International Association for the Study of Pain (IASP) adopted in 2017: nociplastic pain. It is a third category, next to nociceptive pain (from tissue damage or inflammation) and neuropathic pain (from nerve damage). Nociplastic pain arises from altered pain processing without clear evidence of tissue damage or a nerve lesion that would explain it (doi.org). A 2021 review in The Lancet named fibromyalgia as the classic example. It also noted something practical: nociplastic pain responds less to treatments aimed at the body's periphery, such as anti-inflammatory drugs, opioids, surgery, or injections (doi.org). That explains why ibuprofen or a steroid injection often does little for fibromyalgia pain.

For a longer walk-through of the definition, the history of the name, and what "fibro" means in everyday terms, read what fibromyalgia is and how it works.

Is fibromyalgia a real disease?

Yes. The doubt people still hear usually comes from one fact: there is no blood test or scan that confirms it. But "no single test" is not the same as "not real." Migraine and many other conditions are also diagnosed from their symptom pattern.

The strongest evidence comes from brain imaging. In a 2002 fMRI study, researchers pressed on the thumbnail of 16 people with fibromyalgia and 16 matched controls. When both groups received the same pressure, the fibromyalgia group showed 13 brain regions with greater activation, while the controls showed only 1 region with greater activation. To get similar brain activity in the controls, researchers had to press much harder, enough to make the controls feel the same pain the patients felt at a lower pressure (doi.org). In other words, the brain was processing the same pressure as more painful, and the scans showed it.

The medical classification systems also recognize fibromyalgia. In ICD-11, the World Health Organization's newest disease classification, it falls under "chronic primary pain" — pain that lasts more than 3 months, causes significant distress or disability, and is not better explained by another condition (doi.org).

Being believed matters, because diagnosis is often slow. In a survey of 800 patients across eight countries, people waited almost a year before seeing a doctor about their symptoms. Then it took an average of 2.3 years and visits to 3.7 different physicians to get a diagnosis (doi.org). If that sounds familiar, you are in good company, and your experience is not a sign that the pain is imaginary.

Who gets fibromyalgia?

Fibromyalgia occurs in every population studied. Symptom surveys put its prevalence at about 2% to 4% of adults (doi.org), and some estimates run as high as 2% to 8%, depending on the criteria used (doi.org). It is often described as a women's condition, and it is more common in women, but the gap depends heavily on how you measure it.

A Scottish population study applied three sets of criteria to the same community. Under the old 1990 tender-point criteria, the ratio of women to men was 13.7 to 1. Under the 2010 criteria it was 4.8 to 1, and under the modified 2010 self-report criteria it dropped to 2.3 to 1 (these ratios come from a small group: 32 people met at least one set of criteria) (doi.org). The tender-point exam may have contributed to the old "almost only women" picture. Men with fibromyalgia exist, and they are more likely to be missed.

What are the main symptoms of fibromyalgia?

The hallmark is pain that is widespread — in several parts of the body, often on both sides and above and below the waist — lasting at least three months. But pain is rarely the whole story. In the eight-country survey, patients reported an average of 7.3 out of 14 listed symptoms, with pain, fatigue, sleep problems, and trouble concentrating the most common (doi.org).

The core cluster looks like this:

• widespread pain and tenderness, often with stiffness

• fatigue that is out of proportion to what you did

• sleep that doesn't refresh you, even after enough hours

• trouble with memory, focus, and word-finding ("fibro fog")

• headaches, lower abdominal pain or cramps, and low mood, which the 2016 criteria count as part of the symptom score (doi.org)

• sensitivity to touch, cold, noise, or bright light

• flares, when everything gets worse for days or weeks

Our complete list of fibromyalgia symptoms goes through each one, including the less obvious ones such as numbness and tingling, jaw pain, and bladder symptoms. Here are the four that shape daily life the most.

What does fibromyalgia pain feel like?

People describe fibromyalgia pain as a deep ache, burning, throbbing, or the feeling of being bruised all over. Some say it is like having the flu that never ends. The pain can move around, from the neck and shoulders one day to the hips and legs the next.

Two medical terms describe what is happening. Hyperalgesia means that something mildly painful feels very painful. Allodynia means that something that shouldn't hurt at all — a hug, a waistband, a light touch — does hurt. Both come from reduced pressure-pain thresholds, which are a defining feature of fibromyalgia (doi.org).

Some people also feel burning, tingling, or pins and needles. A meta-analysis of 8 studies with 222 participants found signs of damage to the small nerve fibers in the skin or cornea in about 49% of people with fibromyalgia (doi.org). This "small fiber pathology" doesn't explain everyone's pain, but it may explain why some pain feels nerve-like. For the wider picture of long-lasting pain beyond fibromyalgia, see our guide to chronic pain.

Fibromyalgia fatigue

Fibromyalgia fatigue is not ordinary tiredness. It is a heavy, drained feeling that doesn't match what you did, and it often doesn't lift after a night in bed.

Fatigue in fibromyalgia has several sources at once: sleep that is lighter and more broken than normal, the constant effort of living with pain, low mood, and an autonomic nervous system that is working harder than it should (more on that below). Because these feed into each other, improving one — often sleep — can ease the others.

Fibro fog

"Fibro fog" is the name patients gave to the thinking problems that come with fibromyalgia: losing words mid-sentence, forgetting why you walked into a room, struggling to follow a conversation in a noisy place. For years, it was dismissed as a side effect of stress. Testing says otherwise.

A 2018 meta-analysis pooled 37 studies comparing 964 people with fibromyalgia with 1,025 people without it on standard neuropsychological tests. People with fibromyalgia scored lower in every area tested. The biggest gap was in inhibitory control, the ability to filter out distractions (effect size g = 0.61), followed by short-term and long-term memory (g = 0.51 and 0.50) (doi.org). Those are moderate, measurable differences, not imagination.

Fibromyalgia and sleep: why nights don't restore you

Sleep problems are so central to fibromyalgia that "waking unrefreshed" is one of the three scored symptoms in the diagnostic criteria. And sleep is not just another symptom. It is part of the engine that keeps the condition going.

A meta-analysis of 25 case-control studies with 2,086 participants compared sleep in people with and without fibromyalgia. In sleep-lab recordings (polysomnography), people with fibromyalgia spent more time awake after falling asleep, slept less in total, had lower sleep efficiency, and spent less time in slow-wave (deep) sleep and more in light stage 1 sleep (doi.org). Interestingly, sleep felt even worse to patients than the lab showed, which is a reminder that unrefreshing sleep is partly about how restored you feel, not only how many hours you log.

The link runs in both directions. Sleep studies in fibromyalgia show less deep sleep and intrusions of waking-type brain rhythms during non-REM sleep. When healthy people are deprived of sleep, they develop fibromyalgia-like symptoms — muscle aches, tenderness, and fatigue. Sleep loss weakens the brain's built-in pain-dampening pathways, and poor sleep quality is a risk factor for developing chronic widespread pain in otherwise healthy people (doi.org). The same review notes that treatments that improve sleep quality can reduce pain and fatigue.

That creates a loop: pain makes sleep lighter, light sleep weakens pain control, and weaker pain control makes the next day hurt more. Breaking the loop at the sleep end is one of the most practical things you can do. If you regularly sleep eight hours and still wake up exhausted, our article on why 8 hours of sleep can still leave you tired explains non-restorative sleep and the conditions worth ruling out, such as sleep apnea.

What causes fibromyalgia?

There is no single cause. The current model is that some people have a nervous system that is more prone to sensitization, and then one or more triggers push it over the edge (doi.org). Our deep dive on what causes fibromyalgia covers each factor in detail. In short:

Genes and family. Fibromyalgia runs in families. In a study of 533 relatives of 78 people with fibromyalgia and 272 relatives of 40 people with rheumatoid arthritis, the odds of fibromyalgia were 8.5 times higher in relatives of people with fibromyalgia. Those relatives also had more tender points and lower pain thresholds, suggesting that pain sensitivity runs in families, possibly partly through genes (doi.org).

Major stress and trauma. In a 2026 study of 1,761 US service members assessed before and after combat deployment, fibromyalgia rates were about 2% before deployment, similar to civilians. After deployment, they rose to 8.0% in men and 11.1% in women. Service members who had PTSD before deployment had about 3 times the odds of developing fibromyalgia afterward (measured with a self-report questionnaire) (doi.org). This doesn't mean fibromyalgia is "psychological." It suggests a close link between the stress response and pain processing, though an observational study like this can't prove cause.

Infections. Fibromyalgia sometimes starts after an illness. In an Italian online survey of 616 people about six months after COVID-19, 30.7% met the ACR survey criteria for fibromyalgia (doi.org). A self-selected online survey can overestimate this, but it fits what many clinicians see: a "before and after" around an infection.

Other triggers. Physical injury, surgery, and long periods of poor sleep are often reported. Many people can't point to a single trigger, and that's normal too.

Is fibromyalgia an autoimmune disease?

No. Fibromyalgia is not classified as an autoimmune or inflammatory disease. It doesn't cause joint damage, blood markers of inflammation are usually normal, and anti-inflammatory drugs generally don't help it much (doi.org).

The question keeps coming up for two good reasons. First, a 2021 study found that antibodies (IgG) taken from people with fibromyalgia, when injected into mice, made the mice more sensitive to pressure and cold. Antibodies from healthy people had no such effect (doi.org). That is an intriguing lead that the immune system may play a part in some cases, but it was a lab study in animals, and it doesn't make fibromyalgia an autoimmune disease in the clinical sense.

Second, fibromyalgia often coexists with autoimmune and inflammatory conditions. In psoriatic arthritis, for example, studies find that 18% to 64% of patients also have fibromyalgia. When both are present, standard "disease activity" scores can reflect fibromyalgia pain rather than true inflammation, which can lead to stronger immune-suppressing drugs that don't help the pain (doi.org). If you have lupus, rheumatoid arthritis, or another autoimmune condition and your pain doesn't match your inflammation markers, it's worth asking whether fibromyalgia is part of the picture.

Fibromyalgia tender points: the old test and why it changed

If you've read about fibromyalgia before, you've probably seen a diagram of 18 dots on the body. These are the tender points, and for two decades they were the center of the diagnosis.

In 1990, the ACR published criteria based on a study of 558 patients: 293 with fibromyalgia and 265 controls. To be classified as having fibromyalgia, a person needed widespread pain (on both sides of the body, above and below the waist, and along the spine) for at least three months, plus tenderness at 11 or more of 18 specific points. That combination had a sensitivity of 88.4% and a specificity of 81.1% (doi.org). The 18 points are 9 pairs, on both sides of the body: the base of the skull, the lower front of the neck, the top of the shoulders, above the shoulder blades, the second rib near the breastbone, just below the outer elbow, the upper outer buttocks, the outer hip, and the inner knee. The examiner pressed each point with about 4 kg of force.

The tender-point exam had real problems:

• Many doctors never did it, or did it inconsistently.

• Tenderness changes from day to day, so a person could "have" fibromyalgia on Monday and "not have" it on Friday.

• It ignored fatigue, sleep, and thinking problems — the symptoms many patients find most disabling.

• It may have skewed diagnosis toward women, as the 13.7-to-1 ratio above suggests.

In 2010, preliminary ACR diagnostic criteria were published that don't require a tender-point exam at all. In a multicenter study of 829 patients and controls, about 25% of people already diagnosed with fibromyalgia no longer met the 1990 criteria at the time of the study. The new approach correctly classified 88.1% of cases identified by the 1990 criteria (doi.org). It was revised again in 2016. The tender points are now part of history, although your doctor may still press on a few areas as part of a physical exam.

How is fibromyalgia diagnosed?

Fibromyalgia is diagnosed by a clinician, based on your symptoms, history, and exam. The current standard is the 2016 revision of the ACR criteria (doi.org). It uses two scores:

• Widespread Pain Index (WPI): how many of 19 body areas have hurt in the past week (0 to 19).

• Symptom Severity Scale (SSS): how severe your fatigue, unrefreshing sleep, and thinking problems have been (each rated 0 to 3), plus whether you've had headaches, lower abdominal pain or cramps, and depression in the past six months (0 to 12 in total).

You meet the criteria when all of these are true:

1. WPI of 7 or more with SSS of 5 or more, or WPI of 4 to 6 with SSS of 9 or more.

2. Generalized pain, meaning pain in at least 4 of 5 body regions.

3. Symptoms have been at a similar level for at least 3 months.

Two points matter a lot for patients. First, a fibromyalgia diagnosis is valid even if you have another condition, such as arthritis; the 2016 revision removed the old confusing rule about exclusions. Second, the self-report version of the questionnaire is useful for research but is not valid for diagnosing an individual; that step needs a clinician. Across 14 validation studies, the 2010/2011 criteria had a median sensitivity of 86% and specificity of 90% against earlier standards (doi.org).

Your doctor will usually also order some basic blood tests, such as a blood count, thyroid function, and inflammation markers. These don't diagnose fibromyalgia. They check for conditions that can look like it, since fibromyalgia is diagnosed from a typical symptom cluster after ruling out a disease that fully explains the symptoms (doi.org). Our step-by-step guide on how to test for fibromyalgia explains the scoring, the usual lab tests, and which specialist to see.

Fibromyalgia flare ups: what they are and what sets them off

A flare is a period when fibromyalgia symptoms get noticeably worse than your usual baseline — more pain, deeper exhaustion, heavier fog — lasting from a few days to several weeks.

The first study to look at flares directly asked 44 people with fibromyalgia to describe them in their own words. They named four main triggers: stress, overdoing it, poor sleep, and weather changes. They described flares as flu-like body aches and exhaustion, clearly different from their everyday symptoms, and coped with them through medical treatment, rest, avoiding activity and stress, and waiting it out (doi.org).

The "overdoing it" trigger is tricky because the crash is often delayed. You feel fine while cleaning the house or taking a long walk, then pay for it the next day or the day after. Our own data point the same way: Welltory users who self-report fibromyalgia report heavy crashes after physical or mental effort about three times as often as other users (63% vs 21%) (details in the data section below).

Knowing your personal triggers turns flares from random attacks into something you can partly plan around. Our full guide to fibromyalgia flares, their triggers, and how to shorten them includes a flare plan you can prepare in advance.

Fibromyalgia and dysautonomia: the heart rate and HRV connection

The autonomic nervous system runs the body's automatic functions: heart rate, blood pressure, digestion, temperature, and the balance between "fight or flight" (sympathetic) and "rest and digest" (parasympathetic) modes. When it doesn't work properly, doctors call it dysautonomia. Our guide to what dysautonomia is covers the basics.

Many people with fibromyalgia have signs of it. Dizziness, palpitations, and feeling worse when standing are common, and they often show up after moving from lying down to standing. On tilt-table testing, one of the most common findings in people with fibromyalgia is postural orthostatic tachycardia syndrome (POTS) — a heart rate increase of more than 30 beats per minute after more than 3 minutes upright (doi.org). The overlap also runs the other way: in a 2026 study of 305 people with POTS, 86.6% met criteria for central sensitization, and in that group 17.4% had fibromyalgia compared with 0% of those without central sensitization. The authors concluded that "central sensitization and autonomic impairment may coexist" (doi.org). If standing up makes your heart race, read about POTS symptoms and bring it up with your doctor.

The clearest measurable signal is heart rate variability (HRV) — the tiny changes in time between heartbeats, which reflect how flexibly your nervous system shifts between stress and recovery. A systematic review of 16 case-control studies, 10 of them in fibromyalgia, found that most showed lower HRV in people with fibromyalgia than in healthy people, along with higher sympathetic activity and a blunted response to stress. Resistance training improved HRV in people with fibromyalgia (doi.org). A larger meta-analysis of HRV across chronic pain conditions screened 17,350 sources, included 51 studies, pooled 26 of them, and found a consistent, moderate-to-large drop in high-frequency HRV (the parasympathetic "rest" component). The authors noted that the result was heavily influenced by fibromyalgia studies (doi.org).

HRV can't diagnose fibromyalgia, and plenty of people with fibromyalgia have ordinary readings. But it is one of the few objective windows into the strain behind symptoms you can't see. For a plain-language primer, see what HRV measures.

Fibromyalgia, ME/CFS, and other overlapping conditions

Fibromyalgia rarely travels alone. It overlaps with irritable bowel syndrome, migraine, tension headaches, jaw pain, depression, and anxiety, and many of these share the same central sensitization at their core (doi.org).

The closest relative is myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Both involve pain, exhaustion, unrefreshing sleep, and brain fog, and many people meet criteria for both. They are not identical, though. In the HRV review above, people with fibromyalgia showed more HRV changes and higher sympathetic activity during the day, while in ME/CFS HRV was reduced mainly during sleep (doi.org). The defining feature of ME/CFS is post-exertional malaise (PEM): a delayed, disproportionate crash after physical, mental, or emotional effort. If a normal day's activity regularly costs you the next two days, read about ME/CFS symptoms and ask your doctor whether it could be part of your picture. It changes how exercise should be approached.

Long COVID can also look like fibromyalgia, with widespread pain, fatigue, brain fog, and dysautonomia. If your symptoms started after an infection, say so; it shapes which overlaps your doctor checks.

What our data shows: more crashes, similar morning scores

Welltory can't diagnose fibromyalgia, but it can show how people who live with it actually feel and what their daily scores look like. We compared 299 users who self-report fibromyalgia and have wearable-quality data (out of 1,086 who self-report it) with 3,846 wearable-quality users without that flag.

The difference in how people feel is large:

• Heavy crashes after physical or mental effort: 63% vs 21% — about three times as often.

• Waking up not restored: 28% vs 5% — more than five times as often.

Yet the standard morning numbers barely move:

• Morning HRV score (median): 3.0 vs 3.1 — essentially identical.

• Morning wellness score (median): 94.1 vs 94.5 — no meaningful difference.

These are group-level figures from observational data, so they show an association, not a cause, and they can't tell us what any one person's score looks like on a given day.

What this means in practice: people who reported far more crashes and unrefreshing sleep had almost the same median morning scores. So a normal-looking morning number doesn't mean symptoms are under control. Published research shows lower HRV in fibromyalgia at the group level, and in everyday tracking your pattern over time, compared with your own baseline, is likely more useful than any single reading.

Welltory users who self-report fibromyalgia (n = 299 with wearable-quality data, of 1,086) vs users without the flag (n = 3,846). Self-reported crashes and unrefreshing sleep; wearable-derived morning HRV and wellness scores. Observational, anonymized, aggregated; the cohort is defined by self-report, not clinical diagnosis.

How is fibromyalgia treated?

There is no cure that switches fibromyalgia off, but most people can reduce their symptoms and do more. The European League Against Rheumatism (EULAR) reviewed 107 systematic reviews and meta-analyses to update its recommendations. Its conclusions shape care today (doi.org):

• Start with patient education and non-drug treatments.

• Exercise is the only therapy with a "strong for" recommendation.

• If that isn't enough, add treatments tailored to your main problems: psychological therapies such as cognitive behavioral therapy for low mood or unhelpful coping, medication for severe pain or sleep problems, or a multimodal rehabilitation program for severe disability.

• Effects for most treatments are modest, so care usually combines several approaches tailored to your main symptoms.

Medications. Three medicines are FDA-approved specifically for fibromyalgia: pregabalin, duloxetine, and milnacipran (doi.org). Doctors also sometimes use low-dose amitriptyline off-label. The honest picture is that they help some people, not everyone:

• For duloxetine and milnacipran (SNRIs, which act on serotonin and norepinephrine), a Cochrane review of 18 trials with 7,903 participants found that 31% reported at least 50% pain relief, compared with 21% on placebo. About 19% stopped because of side effects, compared with 10% on placebo. The reviewers rated the evidence low quality and concluded that, on average, benefits were modest relative to side effects, although some people get substantial relief (doi.org).

• For pregabalin, which calms overactive nerve signaling, substantial pain relief was reported by about 14% of people on placebo and about 9 percentage points more on pregabalin. Dizziness, sleepiness, weight gain, and swelling were more common (doi.org).

Which medicine, what dose, and how fast to adjust it are decisions for your clinician, who will weigh your other conditions and medications. Opioids are generally not recommended, because nociplastic pain responds poorly to them (doi.org).

Our full guide to fibromyalgia treatment options compares medications, therapy, sleep care, and newer approaches in more detail.

How to exercise with fibromyalgia without triggering a flare

Exercise is the best-supported treatment for fibromyalgia, but the word "exercise" scares many people with fibromyalgia for a good reason: the wrong kind, at the wrong dose, can set off a flare.

The evidence supports gentle, gradual movement. A Cochrane review of 13 randomized trials (839 people) found that, in the 8 trials comparing aerobic exercise with no exercise, pain intensity improved by about 11%, physical function by about 10%, and quality of life by about 8% on average. The quality of evidence for pain was low, and the effect on fatigue was small (doi.org). Modest numbers, but gained without drug side effects. Long-term evidence is limited and low quality.

What usually works:

• Start below what you think you can do. Five to ten minutes of walking, water exercise, cycling, or gentle strength work is a real start.

• Build slowly. Add a little every week or two, not every day.

• Judge by the next day, not the moment. If you feel worse 24 to 48 hours later, scale back to the last level that felt fine.

• Mix in strength work. Resistance training has been linked to better HRV in fibromyalgia (doi.org).

• Respect post-exertional crashes. If you have ME/CFS-like crashes, pacing comes first and a standard exercise progression can backfire.

For a detailed plan, read how to exercise with fibromyalgia without triggering a flare.

When to see a doctor

See a doctor if you've had widespread pain, exhaustion, or unrefreshing sleep for more than a few weeks, especially if it's affecting your work, relationships, or mood. Fibromyalgia is common, but it should be diagnosed only after other causes have been considered.

Get checked sooner if your symptoms come with any of these:

• fever, night sweats, or unexplained weight loss;

• swollen, hot, or red joints, or morning stiffness that lasts more than an hour;

• a new rash, mouth ulcers, or hair loss;

• muscle weakness (not just pain), numbness in one area, or trouble with balance;

• fainting, or a racing heart when you stand up;

• new symptoms after starting a medication;

• pain that started after age 50 together with headaches, jaw pain when chewing, or vision changes.

Seek emergency care for chest pain, fainting with injury, severe shortness of breath, or sudden weakness on one side of the body. Living with chronic pain can wear down anyone's mood. If you have thoughts of harming yourself, contact a crisis line or emergency services right away.

How to bring this up with your doctor — and what to ask for

Say it plainly. "I've had pain in many parts of my body for more than three months, with exhaustion and poor sleep, and it's limiting what I can do. I'd like to be evaluated for fibromyalgia and for anything that could look like it." That one sentence tells your doctor what you need.

Bring context, not just the symptom. When it started and what happened around then (an illness, an injury, a hard year), where it hurts (a body map helps), how you sleep, what makes it worse, and how your days vary. A few weeks of notes on sleep, energy, stress, and flares turns a vague complaint into a clear pattern.

Ask these specifically. Do my symptoms meet the 2016 revised fibromyalgia criteria? Which blood tests should we do to rule out thyroid, anemia, or inflammatory disease? Could my dizziness or racing heart be POTS or dysautonomia, and should I have a stand-up or tilt test? Could sleep apnea be part of this? Is a referral to a rheumatologist, pain specialist, or physical therapist a good next step? What non-drug options can we start now?

If you are dismissed. "I understand there isn't a single test, but this is affecting my life. Can we record my symptoms and work through the possible causes together?" If that doesn't work, asking for a rheumatology referral or a second opinion is reasonable. Remember that on average, patients see several doctors before diagnosis; persistence is normal, not difficult.

How Welltory helps

Welltory doesn't diagnose fibromyalgia, and it can't see pain. What it can see is the body around the pain: your stress load across the day, your HRV and resting heart rate, your sleep, your activity, and your morning energy, each measured against your own baseline rather than a population average.

That matters for fibromyalgia because, in our data, people with fibromyalgia reported far more crashes yet had morning scores similar to everyone else's. The value is in the trend. Over a few weeks, you can see how a short night, a stressful stretch, or an unusually active day shows up in your HRV and resting heart rate, and how long it takes you to recover. Watching those trends may help you notice that your body is under strain before the full crash arrives, which gives you a chance to slow down in time. That is exactly what pacing needs. Breathing and calming measurements let you check whether a relaxation exercise actually shifts your nervous system.

With My Patterns, you can add notes such as "flare," "long walk," "bad night," "weather change," or "new medication" and see what tends to come before your worse days and what comes before your better ones. It won't replace your doctor or your treatment, but it gives both of you a timeline instead of a guess — the kind of context that makes the "bring context" step above easy.

How we made it

The clinical content rests on published research and guidelines: the ACR diagnostic and classification criteria (Wolfe et al. 1990, 2010, 2016), the EULAR revised management recommendations (Macfarlane et al. 2017), clinical reviews (Clauw 2014; Häuser et al. 2015; Choy 2015), the IASP definition of nociplastic pain (Kosek et al. 2016) and a review of nociplastic pain (Fitzcharles et al. 2021), the ICD-11 classification of chronic primary pain (Nicholas et al. 2019), brain imaging (Gracely et al. 2002), population prevalence (Jones et al. 2015), the patient journey to diagnosis (Choy et al. 2010), meta-analyses of cognition (Bell et al. 2018), sleep (Wu et al. 2017), small fiber pathology (Grayston et al. 2019), and HRV (Meeus et al. 2013; Tracy et al. 2016), family and trigger studies (Arnold et al. 2004; Higgs et al. 2026; Ursini et al. 2021), immune research (Goebel et al. 2021), overlap with psoriatic arthritis (Findeisen et al. 2026), autonomic dysfunction and POTS (Staud 2008; Mathew & Novak 2026), flares (Vincent et al. 2016), and treatment reviews (Bidonde et al. 2017; Welsch et al. 2018; Derry et al. 2016; Tzadok & Ablin 2020).

The Welltory figures come from an anonymized, aggregated comparison of 299 users who self-report fibromyalgia and have wearable-quality data (out of 1,086 who self-report it) with 3,846 wearable-quality users without that flag. Signals were self-reported heavy crashes after physical or mental effort and waking up not restored, plus wearable-derived morning HRV and morning wellness scores. The cohort is defined by a self-report survey flag, not a clinical diagnosis, and the results show association, not causation. No individual user is identifiable.

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