Things That Are Often Misdiagnosed in Ehlers-Danlos Syndrome

Why So Many Symptoms in EDS Are Overlooked, Dismissed, or Attributed to the Wrong Condition

Many people living with Ehlers-Danlos syndrome (EDS) spend years searching for answers before receiving an accurate diagnosis.

Many symptoms in Ehlers-Danlos syndrome are misdiagnosed because connective tissue dysfunction affects multiple systems at once, creating pain patterns that do not fit neatly into a single category. Because EDS is a multi-system connective tissue disorder, symptoms often extend far beyond joint hypermobility alone. The condition can influence joint stability, muscular control, nervous system function, breathing mechanics, vascular structures, pelvic health, and overall movement coordination.

As a result, many EDS-related symptoms are frequently misunderstood or mistaken for unrelated conditions.

This does not necessarily happen because clinicians are ignoring symptoms. In many cases, it happens because connective tissue disorders can create complex, multi-system presentations that do not fit neatly into traditional orthopedic, neurological, gastrointestinal, or musculoskeletal categories.

For patients, this often leads to years of being told symptoms are "just posture," "just anxiety," "just muscle tension," or "just deconditioning," when the underlying issue may involve instability, compensatory mechanics, or connective tissue dysfunction that has not yet been recognized.

Symptoms vary significantly between individuals, and a thorough medical evaluation is always important to rule out other causes. But understanding why EDS presentations are so often misattributed can be an important first step.

The Ehlers-Danlos Society provides an overview of the multi-system nature of EDS for those seeking further background.

Why EDS Symptoms Are Frequently Misdiagnosed

Connective tissue exists throughout nearly every region of the body. It helps support joints, stabilize movement, protect nerves and blood vessels, and maintain structural integrity across multiple systems.

Because of this, symptoms in EDS can present in many different ways, including:

•       Chronic pain

•       Joint instability

•       Fatigue

•       Headaches

•       Nerve irritation

•       Gastrointestinal symptoms

•       Pelvic floor dysfunction

•       Autonomic dysfunction

•       Exercise intolerance

•       Positional symptoms

Many of these symptoms overlap with more common diagnoses, which can make EDS difficult to identify early.

In hypermobility disorders, pain is also frequently influenced by movement mechanics, muscular compensation, endurance deficits, and load distribution patterns. This means symptoms may fluctuate depending on activity level, posture, fatigue, stress, or repetitive movement.

The result is that patients often present with symptoms that appear disconnected unless connective tissue dysfunction is considered as part of the bigger picture.

Additional information regarding hypermobile EDS and hypermobility spectrum disorders can be found through the Ehlers-Danlos Society overview of hypermobile EDS diagnostic criteria.

Why Symptoms Often Seem Unrelated

One of the most disorienting aspects of EDS is that symptoms can appear in entirely different parts of the body at different times.

This happens because connective tissue is not localized to one region. When the system responsible for maintaining structural support throughout the body is affected, the downstream effects can appear almost anywhere.

Protective muscular guarding is common in hypermobile patients. When a joint or region becomes less stable, surrounding muscles increase their workload in an attempt to compensate. Over time, those compensation patterns can create secondary symptoms in areas that appear unrelated to the original problem.

This is one reason why treating individual symptoms in isolation, without considering the broader connective tissue picture, often produces only partial or temporary relief.

When Arm Symptoms Are Not Just Carpal Tunnel

Thoracic outlet syndrome (TOS) is one of the conditions that may be overlooked or mistaken for other issues in hypermobile individuals.

People with EDS may experience:

•       Arm pain

•       Tingling

•       Hand numbness

•       Weakness

•       Symptoms with overhead activity

•       Neck and shoulder tension

•       Positional neurological symptoms

These symptoms are sometimes labeled as generalized nerve pain, cervical radiculopathy, or carpal tunnel syndrome without fully evaluating the thoracic outlet region. Symptoms may mimic cervical radiculopathy or carpal tunnel syndrome closely enough that the thoracic outlet is not initially considered.

Thoracic outlet syndrome occurs when nerves or blood vessels become compressed between the neck and shoulder region. Brachial plexus compression is one common mechanism. In hypermobile individuals, this may be influenced by:

•       Shoulder instability

•       Poor scapular control

•       Muscular overcompensation

•       Postural endurance deficits

•       Connective tissue laxity

When stabilizing structures become less efficient, surrounding muscles often attempt to compensate by increasing tension. Over time, this can contribute to compression or irritation around the brachial plexus and nearby vascular structures.

The Cleveland Clinic overview of thoracic outlet syndrome provides additional background on this condition.

Physical therapy in these cases may focus on improving shoulder stability, scapular coordination, breathing mechanics, and load distribution through the upper body.

Rib Pain and Slipping Rib Syndrome in EDS

Slipping rib syndrome is another condition that is commonly misunderstood, particularly in hypermobile populations.

Individuals may describe:

•       Sharp rib pain

•       Clicking or popping sensations

•       Pain with breathing

•       Pain with twisting

•       A feeling that the rib cage is moving

•       Intermittent chest wall pain

These symptoms are often mistaken for muscle strains, costochondritis, anxiety-related chest pain, or generalized thoracic tightness.

In EDS, the connective tissues that help stabilize the rib cage may become more lax, allowing excessive rib movement or altered mechanics within the thoracic region. Rib instability in hypermobility can be particularly difficult to identify because it does not always appear on standard imaging.

Because the rib cage is closely connected to breathing mechanics, trunk stabilization, and spinal movement, instability in this area can create widespread compensatory tension patterns. Some individuals also develop chronic muscular guarding around the thoracic spine and upper abdominal region in an attempt to create stability.

The Cleveland Clinic overview of slipping rib syndrome provides further information on this condition.

Physical therapy may help address breathing coordination, rib cage mechanics, trunk stability, movement control, and thoracic muscular endurance.

Pelvic Floor Dysfunction in Hypermobility Disorders

Pelvic floor dysfunction is another area that is frequently misunderstood in EDS.

Patients may experience:

•       Pelvic pain

•       Constipation

•       Bladder symptoms

•       Pressure sensations

•       Pain with sitting

•       Pain during or after activity

•       Difficulty tolerating prolonged positions

These symptoms are often evaluated through gastrointestinal or gynecological perspectives alone, which may overlook the role of connective tissue and movement mechanics.

In hypermobility disorders, pelvic floor dysfunction is not always caused by weakness alone. In fact, many individuals demonstrate pelvic floor overactivity and excessive muscular tension because the body is attempting to compensate for instability or poor force distribution throughout the pelvis and trunk.

Research has demonstrated an association between hypermobility disorders and pelvic floor dysfunction. A PubMed study on pelvic floor symptoms in women with heritable disorders of connective tissue provides further context.

Pelvic health physical therapy may focus on:

•       Muscle coordination

•       Pressure management

•       Breathing mechanics

•       Movement patterns

•       Pelvic stabilization strategies

•       Reducing excessive muscular guarding

When Chronic Neck Tension Is Actually Compensation

Persistent neck pain and headaches in EDS are often labeled simply as poor posture, stress, or muscle tension.

While muscular tension certainly can contribute to symptoms, hypermobility within the cervical spine may create an entirely different biomechanical situation. Protective muscular guarding is common in hypermobile patients, and the cervical spine is one of the areas where this pattern is most frequently overlooked.

When passive stability is reduced, surrounding muscles frequently work harder to stabilize the neck during everyday activities. Over time, this can contribute to:

•       Chronic muscular fatigue

•       Headaches

•       Neck heaviness

•       Suboccipital tension

•       Burning pain

•       Reduced endurance

•       Difficulty tolerating upright posture

In some individuals, the muscles are not tight because they are the primary problem. They may be overworking in response to instability or inefficient movement control.

This distinction matters because repeatedly trying to release or aggressively stretch already overworked stabilizing muscles may not fully address the underlying issue. Rehabilitation may focus more heavily on deep neck stabilizer endurance, postural tolerance, movement control, gradual strengthening, and load management strategies.

The Ehlers-Danlos Society overview of neurological and spinal manifestations in EDS discusses these patterns in further detail.

Why "Muscle Knots" Keep Coming Back

One of the most common complaints in hypermobility populations is the feeling of chronic muscle knots, particularly between the shoulder blades, around the neck, or throughout the upper back.

These areas are often treated as isolated muscle tightness.

However, in many hypermobile individuals, these muscles may actually be functioning as long-term compensators. Trigger points and muscular compensation are common in this population not because muscles are inherently dysfunctional, but because they are taking on more than their intended share of stabilizing workload.

When joints become less mechanically stable, surrounding musculature frequently increases workload in an attempt to maintain control and positioning. This can create:

•       Persistent trigger points

•       Chronic muscle fatigue

•       Burning sensations

•       Postural exhaustion

•       Recurrent tension patterns

In some cases, the muscles are essentially acting as external stabilizers for joints that are struggling to maintain efficient support independently.

That is one reason temporary relief techniques alone often do not create lasting improvement. Treatment may instead require endurance training, stability-focused rehabilitation, movement retraining, improved load distribution, and gradual tolerance-building.

The APTA physical therapy guide to chronic pain discusses movement-based rehabilitation approaches for persistent pain presentations.

Why Multidisciplinary Care Matters in EDS

EDS symptoms are often complex because connective tissue affects multiple systems simultaneously.

This is why many patients benefit from multidisciplinary care that may involve:

•       Physical therapy

•       Pelvic health specialists

•       Neurology

•       Pain management

•       Rheumatology

•       Gastroenterology

•       Cardiology

•       Primary care coordination

Physical therapy plays an important role not by curing connective tissue disorders, but by helping patients improve movement control, muscular support, endurance, breathing mechanics, and load management strategies that may reduce mechanical stress on vulnerable tissues.

This is the foundation of hypermobility-focused rehabilitation. Whether the presenting issue involves the thoracic outlet, pelvic floor, cervical spine, or rib cage, the underlying approach centers on stability-based physical therapy and movement control and load management rather than symptom-by-symptom treatment in isolation.

Treatment should always be individualized because hypermobility presentations vary significantly between patients.

The Bigger Picture

Many symptoms experienced in Ehlers-Danlos syndrome are misunderstood not because they are imaginary, but because connective tissue disorders can create presentations that cross multiple body systems at once.

Thoracic outlet symptoms may not just be tight muscles. Rib pain may not simply be costochondritis. Pelvic pain may involve more than isolated gynecological dysfunction. Chronic neck tension may reflect stabilizing muscles working overtime in response to instability.

Pain may appear neurological, muscular, gastrointestinal, pelvic, or orthopedic at different points in time. Symptoms may also fluctuate depending on fatigue, posture, activity level, autonomic stress, or mechanical load.

When providers evaluate one body region in isolation, the broader connective tissue pattern can sometimes be missed.

Understanding the role of instability, compensation, endurance demands, and movement mechanics does not minimize symptoms. A systems-based evaluation can help determine whether instability, compensation patterns, or connective tissue dysfunction may be contributing to persistent symptoms.

For many patients, that understanding finally explains why their symptoms never seemed to fit into a single category in the first place.

If this sounds like your experience, talk to one of our EDS-informed specialists - the first conversation is free.