What is the Difference Between Fibromyalgia and Ehlers-Danlos Syndrome?

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Fibromyalgia and Ehlers-Danlos Syndrome (EDS) are two distinct conditions that can present with overlapping symptoms, making it challenging to differentiate between them. Here are the main differences between the two:

Fibromyalgia:

  • Fibromyalgia is a chronic pain disorder characterized by widespread musculoskeletal pain, fatigue, sleep disturbance, memory problems, and mood issues.
  • It is diagnosed based on the patient's symptoms and the exclusion of other conditions.
  • Joint pain is a common symptom in fibromyalgia patients.

Ehlers-Danlos Syndrome (EDS):

  • EDS is a heritable connective tissue disorder caused by a disorder in collagen, leading to increased laxity in bodily organs such as skin, ligaments, joints, blood vessels, and inner organs.
  • Symptoms of EDS include joint hypermobility, skin hyperextensibility, atrophic scarring, cardiovascular abnormalities, dysautonomia, and chronic fatigue.
  • Joint pain is also a common symptom in patients with hypermobile EDS and hypermobility spectrum disorders.

There is a high overlap in patients diagnosed with hypermobile EDS or hypermobile spectrum disorders with fibromyalgia and 40 self-reported symptoms and comorbidities. Some studies suggest that EDS can be present alongside fibromyalgia, with patients experiencing more severe disease when both conditions are present. In conclusion, while there is a significant overlap in symptoms between fibromyalgia and EDS, the underlying causes and characteristics of these conditions are distinct.

Comparative Table: Fibromyalgia vs Ehlers-Danlos Syndrome

Fibromyalgia and Ehlers-Danlos Syndrome (EDS) are two distinct medical disorders that share some overlapping symptoms. Here is a table comparing the key differences between the two:

Feature Fibromyalgia Ehlers-Danlos Syndrome (EDS)
General A genetic disorder characterized by musculoskeletal pain, fatigue, sleep, memory, and mood issues. A genetic disorder characterized by issues in connective tissues, primarily in the skin, joints, and blood vessel walls.
Causes Genetics, infections, physical and emotional events (accidents and psychological stress). Different inherited gene mutations.
Overlap Fibromyalgia is often associated with hypermobility, which is a type of EDS. The majority of patients seen at the EDS Clinic had a diagnosis of hypermobile EDS (hEDS) or hypermobile spectrum disorders (HSD) plus fibromyalgia.

It is essential to note that while there is an overlap between the two conditions, they are distinct disorders with different causal factors and manifestations.