3 doctors weighed in:
Can fibromyalgia cause weakness?
3 doctors weighed in

Dr. Laurence Badgley
General Practice
In brief: Yes
? can fibromyalgia (FM) "cause weakness".
Generalized weakness hallmark symptom of FM. FM caused by conjoining of several co-factors: femaleness, childbirth, prolonged inactivity, mechanical injury, hypermobility. Muscle weaknesses impart asymmetric body postures/biomechanical functions, which beget further sedentariness & advanced generalized muscle weakness; sometimes even bedridden status.

In brief: Yes
? can fibromyalgia (FM) "cause weakness".
Generalized weakness hallmark symptom of FM. FM caused by conjoining of several co-factors: femaleness, childbirth, prolonged inactivity, mechanical injury, hypermobility. Muscle weaknesses impart asymmetric body postures/biomechanical functions, which beget further sedentariness & advanced generalized muscle weakness; sometimes even bedridden status.
Dr. Laurence Badgley
Dr. Laurence Badgley
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3 comments
Dr. Laurence Badgley
Profound weakness is an hallmark of Fibromyalgia. Lethargy, due to pain and sleeplessness, is common. Generation of ennui potentiates additional inactivity, and further loss of muscle mass & tone. Fibromyalgia is a disorder that begets itself.
Dr. Laurence Badgley
Global deconditioning secondary to chronic illness/fatigue is an etiologic factor, among others, evoking fibromyalgia. Young women with Joint Hypermobility Syndrome are particularly vulnerable; as major joints further loosen via diminished soft tissue tone; arousing widespread ligament strain/pain & muscle spasms. Gravity Rules.
Dr. Betty Keller
Internal Medicine - Rheumatology
In brief: No
Fibromyalgia does not cause muscle weakness.
Motor strength is normal. However because of chronic pain, some patients stop exercising and can become de-conditioned. Fibromyalgia patients can also have fatigue but they do not have true muscle weakness.

In brief: No
Fibromyalgia does not cause muscle weakness.
Motor strength is normal. However because of chronic pain, some patients stop exercising and can become de-conditioned. Fibromyalgia patients can also have fatigue but they do not have true muscle weakness.
Dr. Betty Keller
Dr. Betty Keller
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Dr. Dan Fisher
Internal Medicine
In brief: No
Fibromyalgia does not produce weakness if weakness is defined as loss of muscle strength.
However, fibromyalgia may produce fatigue or lack of effort which may be confused with weakness. Fibromyalgia may also produce a great deal of pain that interferes with full application of strength. This condition is detected by the astute clinician as "give way" weakness, not true weakness.

In brief: No
Fibromyalgia does not produce weakness if weakness is defined as loss of muscle strength.
However, fibromyalgia may produce fatigue or lack of effort which may be confused with weakness. Fibromyalgia may also produce a great deal of pain that interferes with full application of strength. This condition is detected by the astute clinician as "give way" weakness, not true weakness.
Dr. Dan Fisher
Dr. Dan Fisher
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