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Causes of Fibromyalgia | Changes in Pain Processing and Triggering Factors

The exact cause of fibromyalgia has not yet been identified as a single factor. Currently, research suggests that a key mechanism is a change in how the central nervous system, including the brain and spinal cord, transmits and receives pain signals, leading to increased pain sensitivity. While family trends suggest a partial contribution of genetic factors, it cannot be explained by a single specific gene. Symptoms may begin following events such as injury, infection, or emotional stress, or they may develop without a clear trigger. Pain is not attributed to an individual's willpower or mindset, nor is it explained as simple muscle damage.

Guide to the Causes of Fibromyalgia

Fibromyalgia: Illustration for this condition

Key points

  1. 1A single exact cause is unknown; changes in pain signal processing and sensitivity are studied as the primary mechanisms.
  2. 2Genetic predisposition and various environmental factors may be involved, but no single factor is definitive.
  3. 3Injury, infection, or stress can be triggers, but these are not the same cause for everyone.

Causal Context and Differential Diagnosis

Distinguishing Core Mechanisms, Predispositions, Triggering Events, and New Disease Signals

In Baekrokdam consultations, we do not determine the cause based on a single test or event; instead, we examine changes in pain processing alongside the possibility of other conditions.
Situation to CheckPossible MeaningNext Step
Persistent widespread pain accompanied by fatigue, sleep, and concentration issuesPossible change in pain signal processing sensitivityEvaluation of symptom combinations and function during medical evaluation
Similar symptoms or diagnoses present in family membersPossibility that genetic predisposition contributes in partIndividual evaluation without confirming based solely on family trends
Symptoms starting after injury, infection, or emotional stressPossibility that a triggering event was the starting pointRecord the flow of events and symptoms, but avoid concluding a single cause
Gradual onset without a clear triggerCan occur even without a triggering eventEvaluation of other causes for pain, sleep, and fatigue
New joint swelling, high fever, or progressive muscle weaknessPossibility of other inflammatory, infectious, or neurological diseasesDo not dismiss as fibromyalgia; seek prompt medical evaluation

What the clinic checks first

Is fibromyalgia caused by stress or being mentally weak?

No. While emotional stress may be a triggering context for some people, the exact cause is unknown, and research focuses on changes in pain signal processing along with genetic and environmental factors. The pain is real and is not explained by a lack of individual will.

Understanding possible causes

Fibromyalgia cannot be explained as a disease caused by damage to a single specific muscle, and a precise single cause is not yet known. Research suggests that changes in the nerve pathways that transmit and receive pain, along with increased pain sensitivity, are the primary mechanisms, which are also linked to fatigue, sleep, and cognitive discomfort. While genetic predispositions and environmental factors—such as other illnesses, injuries, infections, or emotional stress—are thought to be involved, no single factor is confirmed as the definitive cause in individual diagnoses.

How it may develop

Changes in how pain signals are processed

A leading theory is that the process by which the brain, spinal cord, and nerve pathways transmit and receive pain signals changes, leading to a state where the same stimulus is felt as more intense pain.

Changes leading to increased pain sensitivity

Stimuli that would normally not be painful may be felt as pain, or existing pain may be felt for longer durations or over wider areas. This does not mean the pain is imaginary.

Non-pain symptoms are linked to the same changes

Research is exploring the possibility that changes in nerve signals are involved not only in widespread pain but also in fatigue, non-restorative sleep, and difficulties with concentration and memory.

Factors to review

Partial contribution of genetic predisposition

Fibromyalgia tends to appear more frequently within families, suggesting that genetic factors may be involved. However, onset is not confirmed based on a single specific gene or family trend alone.

Other pain disorders may serve as a background

Other conditions that cause persistent pain may act as an environmental triggering context. Existing conditions and fibromyalgia symptoms are evaluated separately and are not grouped under a single cause.

May begin after injury or infection

Some people notice symptoms starting after a physical injury or infection, but this does not mean that the preceding event is necessarily the sole cause.

Emotional stress is also mentioned as a triggering context

While symptoms may begin after significant emotional stress, fibromyalgia is not explained as a psychological problem or a lack of individual willpower. It can also occur without a clear trigger.

Useful context

  • When the pain first started and the order in which it spread
  • Morning and night pain, and changes in fatigue and sleep recovery
  • The timeline between injuries, infections, or major stress and the onset of symptoms
  • Whether family members have been diagnosed with similar chronic pain or fibromyalgia
  • The pattern of pain and recovery after work, exercise, or going out
  • Whether symptoms are accompanied by difficulties with concentration, memory, mood, or digestion
  • New joint swelling, fever, weight changes, or changes in muscle strength and sensation
  • Previous tests, diagnoses, and all prescribed medications and supplements

More detail

Changes in pain processing are studied as the primary mechanism

Changes in signal transmission of neural pathways

A leading theory explaining persistent pain and hypersensitivity is a change in the way the central nervous system, including the brain and spinal cord, processes pain messages.

Pain is real even if tests show no tissue damage

The fact that specific damage was not found through general imaging or blood tests does not mean the pain is not there. It is important to understand the functional processing changes in the nervous system.

Fatigue, sleep, and cognitive issues often co-occur

Changes in pain processing can also contribute to fatigue, a feeling of not being refreshed after sleep, and difficulties with concentration and memory; therefore, these symptoms are evaluated together as a cluster.

Genetic predisposition and environmental factors are seen as jointly involved

Family trends are viewed as one predisposition

Similar diagnoses within a family suggest a contribution of genetic predisposition, but this does not mean the condition will inevitably develop, nor is it diagnosed based on family trends alone.

Cannot be explained by a single specific gene

An interaction of multiple factors is expected, and currently, no single specific gene can be confirmed as the cause. Genetic testing is not viewed as a means of confirming the cause.

Other chronic pain conditions also have an impact

Other diseases that cause long-term pain and mental health issues may be included in the risk context. Comorbidities are not attributed to the individual and are treated separately.

Distinguishing between triggering events and causes

Injury and infection can be triggers

In some cases, whole-body pain and fatigue begin after an injury or infection, but not everyone experiences such an event, and a definitive causal relationship cannot be established.

May begin after emotional stress

Significant stress may coincide with the onset of symptoms, but this does not mean stress is the sole cause. Pain is not explained as a result of one's mindset or a lack of willpower.

Can occur without a clear trigger

Fibromyalgia is not ruled out even if no specific event is found. Rather than forcing a cause, we evaluate symptoms, function, and the possibility of other diseases.

Signals of other diseases are not overlooked as fibromyalgia

New joint swelling and high fever require re-evaluation

Red and hot joints, high fever, chills, and a general decline in systemic condition require confirmation of potential inflammation or infection distinct from existing pain.

Progressive changes in muscle strength or sensation require neurological evaluation

If weakness or loss of sensation progresses, or if walking or bowel/bladder functions change, do not dismiss this as a worsening of fibromyalgia and seek prompt medical evaluation.

Herbal medicine treatment does not replace the evaluation of the cause

Baekrokdam herbal medicine treatment does not replace the differential diagnosis of other diseases or evidence-based fibromyalgia treatment; it provides supportive consultation only for remaining discomfort during the stable phase.

Baekrokdam's perspective on fibromyalgia cause consultations

We look at pain processing and signals of other diseases together, rather than blaming a single event

In acute situations involving new joint swelling, high fever, progressive changes in muscle strength or sensation, chest pain, or difficulty breathing, immediate evaluation is required before Korean herbal medicine treatment at Baekrokdam. Once risks are ruled out, if pain, fatigue, or sleep problems become chronic or recurrent, we examine the nervous system's pain processing and genetic/environmental contexts, but we do not attribute the cause to an individual's mind or fault. While maintaining existing diagnoses and treatments, consultations for Korean herbal medicine are limited to a supportive role for remaining discomfort.
Acute Differentiation

We first look for new signs of inflammation, infection, or neurological issues

New swelling, high fever, progressive changes in muscle strength, sensation, or bowel/bladder function, and cardiopulmonary symptoms are not dismissed as existing generalized pain.

Causal Context

We distinguish between pain processing, predisposition, and triggering events

We examine the timeline of pain onset, sleep, fatigue, family tendencies, and injuries, infections, or stress, without attributing it to any single factor.

Korean Herbal Medicine Treatment

We only address remaining functional discomfort after evidence-based treatment

We do not replace exercise, sleep, psychological, or drug therapies; we only set supportive goals for chronic or recurrent pain, fatigue, and walking or work functions.

Please prepare information regarding when the pain started and the order in which it spread, records of sleep, fatigue, and activity, any preceding injuries, infections, or stress, similar symptoms in family members, test results, and all medications you are taking.

Frequently asked questions

What is the exact cause of fibromyalgia?

A single cause has not been determined. Changes in pain signal processing and increased pain sensitivity are the primary mechanisms, and it is believed that genetic predispositions and environmental factors are involved together.

If a family member has fibromyalgia, will I develop it too?

There is a familial tendency, but it does not necessarily mean it will develop, and it cannot be explained by a single specific gene. If you have symptoms, please receive an individual evaluation.

If it occurs after an injury or infection, is that the cause?

It can be a triggering event, but it cannot be confirmed as the sole cause simply because it occurred first. It can also occur without a clear trigger.

Can herbal medicine eliminate the cause?

Since there is no confirmed single cause, we do not promise the removal of the cause. We provide consultation only within the supportive scope for remaining discomfort while maintaining existing diagnoses and exercise, sleep, psychological, and medication treatments.

Sources

  1. NIAMS — FibromyalgiaEvidence regarding unknown causes, signal changes in pain neural pathways, pain sensitivity, familial tendencies, and contributions of genetic and environmental factors
    Open source
  2. NHS — Causes of fibromyalgiaChanges in pain message processing in the central nervous system, genetic predisposition, triggering contexts such as injury, infection, and emotional stress, and limitations of a single cause
    Open source

Content reviewed:

This information supports, but does not replace, diagnosis or treatment by a qualified healthcare professional.

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