Last updated: 2026-10-30
You Don't Feel Rested After Sleep, and Pain Moves Around Your Whole Body
If pain moves around your whole body and you still feel tired after sleeping, you need to look at how long the pain has lasted and how widely it has spread. Fibromyalgia is mainly characterized by pain in multiple areas of the body that persists for more than three months, together with fatigue and unrefreshing sleep.
For example, a working woman in her 40s may sleep seven hours every night and still wake up with a body as heavy as water-soaked cotton, with aching that shifts day to day between her neck, shoulders, lower back, and thighs. The pain tends to be a dull, lingering ache rather than a sharp, stabbing one, and it spreads widely across both the left and right sides of the body as well as above and below the waist.
Fibromyalgia affects 2–8% of the general population and is more common in women than in men (Clauw DJ, 2014). Patients wake up tired even after sleeping enough hours, and some may also experience a cognitive symptom known as "fibro fog," marked by mental cloudiness, difficulty concentrating, and blurred memory (Clauw DJ, 2014). Beyond the body-wide aching, fibromyalgia often occurs together with migraine or tension headaches, jaw joint pain, irritable bowel syndrome involving abdominal pain and changes in bowel habits, and mood problems such as anxiety or depression (Clauw DJ, 2014).
Why Do Even Non-Painful Stimuli Feel Painful?
The widespread pain experienced by fibromyalgia patients involves central sensitization, a state in which the central nervous system—the brain and spinal cord—amplifies sensory signals beyond their normal intensity (Clauw DJ, 2014). Even without noticeable damage to the muscles or joints themselves, the nervous system has turned up the volume on pain, so stimuli that would not hurt someone else—such as light touch or pressure—can be felt as distinct pain (Clauw DJ, 2014).
Some studies show that fibromyalgia patients have reduced metabolism of serotonin, which suppresses pain. Conversely, substance P, which carries pain signals, has been found to be elevated in the cerebrospinal fluid. The autonomic nervous system regulates tension and relaxation, heart rate, body temperature, and similar functions, and reduced function of this system has also been observed in some cases.
A complex mix of genetic predisposition, life experiences, patterns of emotion and thought, and ways of coping with stress is involved in these changes in the nervous system. Symptoms may begin after trauma such as a car accident, surgery, infection, or major psychological stress, or they may develop gradually without any clear trigger. When shallow sleep that never turns deep at night combines with daytime pain, a vicious cycle takes hold: lack of sleep makes a person more sensitive to pain the next day, and the worsened pain disrupts sleep again, each making the other worse.
How Is Fibromyalgia Diagnosed?
In the past, diagnosis centered on tender point examination, which counted how many specific points on the body hurt when pressed. Starting with the 2010 American College of Rheumatology (ACR) criteria, this shifted to an approach that evaluates the Widespread Pain Index, which reflects how extensively pain is distributed, together with symptom severity (Wolfe F et al., 2010). Pressing on tender points is not essential for diagnosis, and the symptom severity assessment looks at how severe fatigue, unrefreshing sleep (waking up still tired), problems with concentration and memory, and various somatic symptoms such as headache or abdominal pain are (Wolfe F et al., 2010).
The revised 2016 criteria added a further requirement: patients must meet not only the thresholds for the number of painful sites and the symptom severity score, but also a generalized pain condition—pain in at least four of five body regions (Wolfe F et al., 2016). The criteria also check whether these symptoms have persisted at a similar level for three months or more. Fibromyalgia can be diagnosed alongside other conditions, such as rheumatic disease or degenerative joint disease, as long as the symptom criteria are met (Wolfe F et al., 2016). Research studies classifying symptoms across a population sometimes use a self-report questionnaire version, but diagnosing an individual patient relies on the physician-assessed criteria, which incorporate the patient's history and a clinical examination.
Distinguishing fibromyalgia from myofascial pain syndrome hinges mainly on how widely the pain is distributed and whether fatigue and sleep problems accompany it. Myofascial pain syndrome is a localized muscle condition: a specific muscle has a firm, knotted trigger point, and pressing on that point produces referred pain radiating to the surrounding area. Fibromyalgia, in contrast, involves pain spread across four or more body regions, with sleep problems, fatigue, and cognitive symptoms as the main features. The two conditions are not mutually exclusive, though, and can occur together in the same person. If generalized pain is accompanied by actual joint swelling and warmth, fever, or unexplained weight loss, other underlying conditions such as inflammatory arthritis or infection should be ruled out first.
Why Exercise Is the First Recommendation in Treatment
In the European League Against Rheumatism (EULAR) 2017 recommendations, exercise was the only treatment among several to receive a strong recommendation (Macfarlane GJ et al., 2017). These recommendations judged the outcomes of each treatment based on pain, fatigue, sleep, and daily function (Macfarlane GJ et al., 2017). The first step in management is non-drug treatment, including exercise and education that helps patients understand the nature of the condition.
The specific benefits of aerobic exercise are also confirmed in analyses that pooled clinical studies. A Cochrane review pooled results from 839 participants across 13 randomized controlled trials of aerobic exercise in adult patients (Bidonde J et al., 2017). The analysis found that after 6 to 24 weeks, the exercise group's pain intensity was about 11 points lower than the control group on a 100-point scale, and quality of life and physical function also improved more than in the control group (Bidonde J et al., 2017). In these studies, aerobic exercise consisted of sustaining activities that raise breathing and heart rate—such as walking, cycling, or water-based exercise—for a set duration, and dropout rates were similar between the exercise and control groups (Bidonde J et al., 2017).
When disease education and exercise alone do not sufficiently control symptoms, the next stage of treatment is added according to the predominant symptom. EULAR recommends that this stepwise treatment not be decided unilaterally by the physician, but proceed through shared decision-making in which the patient and physician consult together (Macfarlane GJ et al., 2017). If mood problems such as depression or anxiety persist after initial management, psychotherapy is added, and if severe pain and sleep disturbance continue, drug treatment is added. If pain and fatigue significantly impair daily functioning, such as work or household activities, multidisciplinary rehabilitation involving several specialties is used alongside other treatments.
The additional drug and non-drug treatments applied are also chosen from methods with confirmed clinical evidence. Tricyclic antidepressants, serotonin-norepinephrine reuptake inhibitors (SNRIs), and gabapentinoids are the major drug classes with evidence supporting their use in fibromyalgia treatment (Clauw DJ, 2014). These drugs are used to regulate hypersensitive pain-transmission pathways in the brain and spinal cord and to improve sleep quality. Among non-drug treatments, cognitive behavioral therapy—which addresses excessive fear of pain and negative cognitions while building coping skills—is supported by treatment evidence (Clauw DJ, 2014).
This condition arises from an interplay of genetic predisposition, past physical and psychological experiences, emotional state, and ways of coping with stress, so rather than relying on a single treatment, multiple approaches are used together, including exercise, education, medication, and psychological approaches. In addition, even among patients with the same diagnosis, there are subgroups in which pain, fatigue, sleep problems, and mood symptoms present differently, which makes individualized treatment important. When starting treatment, the physician and patient together review the patient's current physical condition and living circumstances, set realistic treatment goals that can be carried out in daily life, and gradually expand the range of activity.
When Stiffness and Pain Make It Hard to Start Exercising
Fibromyalgia varies from patient to patient in pain severity, accompanying fatigue, and level of physical function. Even when patients understand that exercise needs to be central to their care, it isn't easy to start walking or strength training on their own when the whole body feels stiff and even slight movement brings on aching.
To address this, we first check the patient's usual posture habits, muscle tension by region, and which areas bear overload during everyday movements. When the muscles are heavily tightened and posture is placing a large burden on the body, we use high-frequency diathermy manual therapy and posture-strengthening manual therapy to release the tension in the stiff muscles and reduce the postural load on the joints and spine. Once the muscle tension eases, we follow with exercise therapy to train the muscles needed to hold correct posture. This exercise therapy isn't meant to push patients into high-intensity exercise right away. It's a process that helps patients who find it hard to start exercising on their own begin daily activity and regular exercise without their pain getting worse.
When whole-body fibromyalgia pain occurs together with myofascial pain syndrome, a localized pain condition, many patients also have firm trigger points that can be felt in the neck, shoulder, or lower back muscles. In these cases, we treat the trigger points at the affected area and combine this with stretching to lengthen the shortened muscles and posture-correction exercises, working to reduce the cycle in which localized pain stimulates whole-body pain sensitivity. We also review daily habits that add to physical strain, such as work posture or sleep environment, to help keep the body from becoming excessively tense even outside the treatment room.
References
- Clauw DJ (2014). Fibromyalgia: a clinical review.. JAMA. PMID: 24737367
- Sarzi-Puttini P, Giorgi V, Marotto D (2020). Fibromyalgia: an update on clinical characteristics, aetiopathogenesis and treatment.. Nat Rev Rheumatol. PMID: 33024295
- Wolfe F, Clauw DJ, Fitzcharles MA (2010). The American College of Rheumatology preliminary diagnostic criteria for fibromyalgia and measurement of symptom severity.. Arthritis Care Res (Hoboken). PMID: 20461783
- Wolfe F, Clauw DJ, Fitzcharles MA (2016). 2016 Revisions to the 2010/2011 fibromyalgia diagnostic criteria.. Semin Arthritis Rheum. PMID: 27916278
- Macfarlane GJ, Kronisch C, Dean LE (2017). EULAR revised recommendations for the management of fibromyalgia.. Ann Rheum Dis. PMID: 27377815
- Bidonde J, Busch AJ, Schachter CL (2017). Aerobic exercise training for adults with fibromyalgia.. Cochrane Database Syst Rev. PMID: 28636204
Frequently Asked Questions
Q. Can fibromyalgia be diagnosed with a blood test or MRI?
There is no single blood test or MRI scan that can definitively diagnose fibromyalgia. Blood tests are used to rule out other possible causes, such as hypothyroidism or inflammatory conditions, while MRI is performed when a structural abnormality in a specific area is suspected.
Q. How should I set exercise intensity if I have fibromyalgia?
Start with light intensity and short duration, at a level where you can still hold a conversation while exercising. Track not only how you feel right after exercising but also the pain, fatigue, and impact on daily activities the following day, and lower the duration or intensity if the burden feels too high. Once you've adapted to your current exercise load, increase duration and intensity gradually rather than raising both at once.
Q. Why are antidepressant medications used to manage pain?
Some antidepressants modulate the action of neurotransmitters involved in pain control, such as serotonin and norepinephrine, so they are used to manage fibromyalgia pain even when depression is not present. The specific drug and dose are chosen based on the patient's pain and sleep problems, other medications being taken, and side effects. After the patient starts taking the medication, changes in symptoms and effects such as drowsiness and nausea are checked, and the treatment is adjusted accordingly.
Medical review: Jumin Kim · Medical Director · THE WELLS