Fibromyalgia: Symptoms, Diagnosis, and Living With Widespread Pain

Fibromyalgia is a long-term condition marked by widespread pain, fatigue, unrefreshing sleep, and problems with memory and concentration. There is no single blood test or scan for it. Clinicians usually diagnose it from your symptom pattern while checking for other conditions that can look similar. Fibromyalgia itself is not an emergency, but certain symptoms, such as chest pressure or sudden weakness, need urgent care. This article covers symptoms, diagnosis, treatment options, and daily management.

Fibromyalgia symptoms: what widespread pain actually feels like

Fibromyalgia is a chronic pain condition. According to MedlinePlus, it can cause pain and tenderness throughout the body, along with tiredness and trouble sleeping. People describe the pain in different ways: aching, burning, stabbing, or a deep soreness like the flu. It often affects both sides of the body and areas above and below the waist.

The pain may move around from one day to the next. A body area that feels fine on Tuesday can hurt on Friday. Weather changes, stress, poor sleep, and overexertion are often described as making symptoms worse, though the pattern differs from person to person.

Symptoms beyond pain

Pain is only part of the picture. Many people with fibromyalgia also report:

• Fatigue that does not improve much with rest, even after a full night in bed.
• Unrefreshing sleep, including trouble falling asleep, waking often, or waking stiff and tired.
• "Fibro fog", meaning trouble with concentration, word-finding, and short-term memory.
• Morning stiffness in muscles and joints.
• Headaches, including migraine-type headaches.
• Digestive symptoms such as bloating, constipation, or diarrhea, sometimes overlapping with irritable bowel syndrome.
• Numbness or tingling in the hands and feet.
• Sensitivity to light, noise, smells, or temperature.
• Low mood or anxiety, which are common alongside long-term pain.

Fatigue on its own has many possible causes. If tiredness is your main concern, our guide to causes of fatigue covers the wider list, and the MedlinePlus page on fatigue is a useful overview.

What may cause fibromyalgia?

The cause is not fully understood, and several factors probably contribute. A widely discussed idea is that the nervous system processes pain signals differently, so normal sensations can feel painful and painful ones feel stronger. Researchers sometimes call this central sensitization. Other work has looked at sleep disruption, stress hormones, and changes in how muscles use oxygen, but these findings are still being studied and do not yet explain every case.

Fibromyalgia often begins or worsens after a physical injury, an infection, surgery, or a period of intense emotional stress. It can also develop without a clear event. A family history of fibromyalgia may raise the chance of developing it, and it is diagnosed more often in women than in men. It also occurs alongside other conditions such as arthritis, lupus, and depression, which can make sorting out symptoms harder.

Fibromyalgia does not damage joints, muscles, or organs in the way that inflammatory arthritis can. That does not make the pain less real. It means the condition is understood mainly as a problem of pain processing rather than tissue injury.

How fibromyalgia is diagnosed

Diagnosis is clinical, meaning your clinician combines your history, a physical exam, and sometimes testing. No lab test or imaging study can confirm fibromyalgia. The review Fibromyalgia syndrome: classification, diagnosis, and treatment describes how classification criteria have shifted over time, from counting tender points on the body toward a broader assessment of symptoms.

Current criteria generally look at two things. The first is how many body regions have been painful. The second is how severe fatigue, unrefreshing sleep, and cognitive problems have been. Symptoms are generally expected to have been present at a similar level for a prolonged period, in current criteria usually at least three months, and a clinician needs to consider whether another condition better explains them.

Ruling out conditions that look similar

Because fibromyalgia overlaps with many other problems, your clinician may order blood work to look at possibilities such as:

• Thyroid disease. An underactive thyroid can cause fatigue, aches, and low mood. See our article on hypothyroidism.
• Inflammatory arthritis, such as rheumatoid arthritis, or other autoimmune conditions like lupus. These often involve joint swelling or abnormal inflammation tests.
• Vitamin D deficiency or anemia, which can contribute to tiredness and body aches.
• Sleep disorders, including sleep apnea and restless legs syndrome.
• Muscle disorders. MedlinePlus has an overview of muscle disorders.
• Medication effects. Some drugs, including certain cholesterol medicines, can cause muscle aches.

A normal test result does not mean your symptoms are imagined. It is part of how clinicians narrow the possibilities. Having fibromyalgia also does not protect you from other conditions, so new or different symptoms deserve a fresh look rather than being attributed to fibromyalgia automatically.

How to prepare for the visit

Fibromyalgia can take time to identify, and many people see more than one clinician along the way. A few notes can make the appointment more productive:

• Mark the areas that hurt on a simple body outline and note how long the pain has been present.
• Describe your sleep, energy, and thinking problems in specific terms, such as how many nights a week you wake unrefreshed.
• List every medicine and supplement you take, with doses.
• Mention any family history of arthritis, autoimmune disease, or thyroid problems.
• Note what makes symptoms better or worse, including activity, stress, and weather.

Treatment: what a fibromyalgia plan can include

No single treatment works for everyone, and outcomes vary. Most plans combine several approaches and are adjusted over time. The Patient Version of Guideline for Fibromyalgia (2025 Edition) is a plain-language summary of current recommendations and is worth reading before or after your visit so you can talk through options with your clinician.

Movement and exercise

Regular, gentle activity is a core part of many fibromyalgia plans and may reduce pain and fatigue over time. Walking, swimming, water exercise, cycling, tai chi, and yoga are commonly discussed. Starting low and increasing slowly matters, because doing too much on a good day can leave you flattened for the next several. A physical therapist can help build a program that fits your current ability. Talk with your clinician first if you have heart, lung, or joint conditions.

Sleep and stress

Sleep problems and pain can feed each other. Steady sleep and wake times, a cool dark bedroom, limiting caffeine later in the day, and a wind-down routine can help some people. If you cannot fall asleep even when you are exhausted, see our article on insomnia. Tell your clinician about snoring, gasping at night, or restless legs, because treatable sleep disorders can add to symptoms.

Talking therapies

Cognitive behavioral therapy (CBT) does not treat pain as imaginary. It teaches skills for pacing activity, handling flares, and changing the thought patterns that can heighten stress and pain. Evidence suggests it can help some people cope better with long-term pain. Mindfulness-based approaches and pain education programs are other options.

Medicines

Medicines can be part of treatment, and outcomes vary. Drugs prescribed for fibromyalgia include duloxetine and milnacipran (both serotonin-norepinephrine reuptake inhibitors), and pregabalin (a nerve-pain medicine). Some clinicians also use low-dose amitriptyline or similar drugs at bedtime. Amitriptyline can cause drowsiness, dry mouth, constipation, urinary retention, a fast heartbeat, and heart rhythm effects, so tell your clinician about any heart condition and about every other medicine and supplement you take. Older adults may need extra caution. Each of these medicines has side effects, such as nausea, dizziness, drowsiness, weight gain, or swelling, and your clinician will weigh them against your other conditions and medicines.

Duloxetine, milnacipran, and amitriptyline are antidepressant-class drugs, and antidepressants, including amitriptyline, carry a boxed warning on their labels about an increased risk of suicidal thoughts and behavior in children, teens, and young adults. Report new or worsening depression, mood changes, agitation, or thoughts of self-harm to your prescriber promptly. Do not change the dose or stop one of these medicines on your own, because stopping suddenly can cause withdrawal-type symptoms. Ask your prescriber or pharmacist about interactions, especially with other antidepressants, tramadol, opioids, migraine medicines, other sedating medicines, or alcohol.

Combining serotonergic medicines can, in some cases, cause serotonin syndrome, a serious reaction. Ask your prescriber or pharmacist before combining amitriptyline or any of these medicines with other serotonergic drugs. Features of serotonin syndrome can include agitation or confusion, high fever, heavy sweating, muscle rigidity or twitching, tremor, a fast heartbeat, or diarrhea, and it is more likely to appear after starting a medicine or raising a dose. These features call for emergency care, as listed in the box below.

Over-the-counter pain relievers such as acetaminophen (Tylenol) or ibuprofen may ease some aches, but they are not designed for fibromyalgia and may not help much. Opioid pain medicines are generally not considered a good fit for fibromyalgia because of their risks and limited benefit, so discuss this with your clinician if it comes up.

Living with fibromyalgia day to day

Fibromyalgia is long-term, and symptoms often rise and fall. Many people find that flares settle and that better routines can make days more predictable. The MedlinePlus page on chronic pain offers general guidance on living with ongoing pain.

• Pace yourself. Break tasks into smaller pieces and rest before you are worn out, rather than after.
• Keep a symptom log. Noting sleep, activity, stress, and pain can reveal patterns you and your clinician can use.
• Use heat. Warm showers, heating pads, and warm-water exercise can ease stiff muscles for some people.
• Protect your routines at work. Ergonomic changes, scheduled breaks, or flexible hours may help, and your clinician can provide documentation if needed.
• Stay connected. Support groups and trusted friends or family can reduce the isolation that often comes with invisible conditions.
• Look after mood. Depression and anxiety are common with chronic pain and are treatable. Mention them to your clinician.

How it differs from other pain conditions

Fibromyalgia differs from osteoarthritis, where joint cartilage wears down, and from localized problems like a lower back strain. Our articles on joint pain and lower back pain explain those patterns. In fibromyalgia the pain is widespread, often comes with fatigue and sleep problems, and does not follow one joint or injury. It can also coexist with those conditions, so you may need care for more than one at a time.

When to get medical help

Fibromyalgia on its own does not cause heart, lung, or brain emergencies. That is exactly why new symptoms should not be assumed to be "just fibromyalgia". Chest pressure, signs of stroke, sudden weakness, the serotonin syndrome features described above, or thoughts of ending your life need urgent attention, as listed in the box below. Same-day or next-available care is appropriate for fever, unexplained weight loss, a hot swollen joint, or medicine side effects.

If you are having thoughts of harming yourself, call or text 988, the Suicide and Crisis Lifeline, any time. Long-term pain and poor sleep can wear down mood, and help is available. If you feel you may act on those thoughts or cannot stay safe, call 911.

Key takeaways

• Fibromyalgia is a chronic condition of widespread pain, fatigue, unrefreshing sleep, and thinking difficulties.
• Diagnosis rests on your symptom pattern and a review for other conditions, since no single test confirms it.
• Exercise, sleep care, talking therapies, and sometimes medicines can be combined, and plans are adjusted over time.
• Tell your prescriber about mood changes on antidepressant-class medicines, and ask before changing any dose.
• New or unusual symptoms deserve evaluation rather than being attributed to fibromyalgia.

When to Seek Medical Care