If you have been told you are “just flexible,” have spent years collecting diagnoses that never quite explained your full picture, or have a child who keeps getting hurt in ways that seem disproportionate to what happened — you may have already heard the term hypermobile EDS. Maybe a doctor mentioned it in passing. Maybe you found it on your own after searching your symptoms at midnight. Either way, you deserve a clear, honest explanation of what it actually is.
This post is that explanation. No jargon, no glossed-over complexity. Just a real guide to what hypermobile EDS is, what it does to the body, how it gets diagnosed, and what living with it actually looks like — written for patients and families who are trying to make sense of it for the first time, or find a provider who will finally take it seriously.
What Is Hypermobile EDS?
Hypermobile Ehlers-Danlos Syndrome, or hEDS, is the most common subtype of Ehlers-Danlos Syndrome — a group of hereditary connective tissue disorders. EDS has 13 recognized subtypes. hEDS accounts for the large majority of diagnoses and is also the most frequently missed, most frequently misdiagnosed, and most chronically underestimated of the group.
Unlike most other EDS subtypes, hEDS does not yet have a confirmed genetic marker, which means there is no definitive blood test or gene panel that confirms it. The diagnosis is made clinically, based on a careful evaluation of symptoms, physical findings, and family history. That absence of a simple diagnostic test is one of the primary reasons hEDS patients wait so long for answers. A large-scale international survey published in 2025 found that participants with hEDS reported an average diagnostic delay of 22.1 years from symptom onset to confirmed diagnosis. That number is not a typo.
What Is Actually Going Wrong in the Body?
At its core, hEDS is a disorder of connective tissue — specifically collagen, the protein that acts as the structural scaffolding throughout your entire body. Collagen is found in your joints, skin, blood vessel walls, gut lining, tendons, ligaments, and more. When collagen is not structured or synthesized correctly, the effects are not confined to one system. They ripple through every system that depends on connective tissue for integrity and stability, which is most of them.
This is why hEDS presents so differently from patient to patient and why it overlaps with so many other conditions. It is not that these patients happen to have twelve unrelated problems. It is that one underlying connective tissue disorder is expressing itself across multiple body systems simultaneously.
The Core Symptoms
The defining feature of hEDS — the one most people have heard of — is generalized joint hypermobility. This means joints that move beyond their expected range of motion. In children, this often looks like impressive flexibility: the ability to bend fingers back flat, hyperextend elbows and knees, touch the floor with flat palms, and perform contortions that make gym class teachers take notice.
In adults, the flexibility may have decreased over time, but the consequences of years of hypermobility — chronic joint pain, repeated sprains and strains, dislocations and subluxations, and accumulated soft tissue damage — often remain or worsen. Subluxations, which are partial dislocations, can happen during ordinary daily activities: getting dressed, opening a jar, rolling over in bed. They are acutely painful, they accumulate, and they are one of the primary drivers of the chronic pain that defines life with hEDS for many patients.
Beyond the joints, hEDS involves what clinicians call a systemic connective tissue disorder — meaning signs that the collagen abnormality is affecting the body more broadly. This can include skin that feels unusually soft or velvety, skin that stretches more than expected, easy bruising without significant trauma, slow or poor wound healing, and scars that heal wide and papery rather than fine and clean. Dental crowding, abdominal hernias, and pelvic organ prolapse are also associated features, all rooted in connective tissue laxity in different parts of the body.
The Conditions That Come With It
Where hEDS becomes particularly complex — and particularly difficult for patients to navigate — is in its comorbidities. A registry study found that all but one participant out of hundreds reported at least one additional health condition alongside hEDS, with the average number of co-diagnoses per individual sitting at over ten. The most prevalent were anxiety at 75%, depression at 68%, migraines at 67%, POTS at 61%, and irritable bowel syndrome at 57%.
These are not coincidental. Each one connects back to the underlying connective tissue disorder in ways that are now increasingly well understood. POTS occurs in the majority of hEDS patients because lax blood vessel walls allow blood to pool in the lower body when standing, triggering the autonomic nervous system to spike heart rate to compensate. The anxiety is real, but much of it is driven by an autonomic nervous system that is chronically dysregulated rather than by psychological factors alone. The IBS and gastrointestinal symptoms reflect connective tissue laxity in the gut. The migraines connect to cervical instability and autonomic dysfunction. The chronic fatigue — which many hEDS patients describe as one of their most disabling symptoms — is multifactorial, driven by pain, poor sleep, autonomic dysfunction, and the sheer metabolic cost of a body that has to work harder than it should just to stay stable.
None of this is in anyone’s head. All of it has biological explanations.
How hEDS Is Diagnosed
Diagnosing hEDS requires meeting criteria across three domains established by the 2017 International Classification for EDS. The first involves assessing generalized joint hypermobility using the Beighton scoring system, which evaluates specific joints for excess range of motion. The second requires evidence of a systemic connective tissue disorder — meaning additional features beyond just hypermobile joints, such as skin changes, musculoskeletal complications, or the associated conditions described above. The third requires either a family history consistent with hEDS or significant musculoskeletal complications such as frequent dislocations or chronic widespread pain, along with exclusion of other connective tissue disorders that might explain the findings.
It is worth noting that the 2017 criteria have faced criticism for being potentially too stringent and not fully capturing the multisystemic involvement that many patients present with — and updated criteria are anticipated in 2026 that may better reflect the complexity of the condition. If you have been evaluated and told you do not quite meet the criteria despite a compelling clinical picture, that does not necessarily mean your symptoms are not real or not meaningful. It may mean the criteria themselves are still catching up.
What Families Need to Know
One of the most important things families need to understand about hEDS is that it is hereditary. It runs in families, and it often presents differently across family members. A mother with hEDS might have primarily dealt with joint pain and fatigue, while her daughter develops more pronounced POTS and gastrointestinal symptoms. A father with hEDS might have been an unusually flexible athlete in his youth who noticed few symptoms until his thirties.
If you receive a diagnosis of hEDS, the question of whether other family members are affected is worth exploring — particularly for children who may still be in a stage where proactive physical therapy and joint protection strategies can meaningfully reduce long-term damage.
Symptom onset in hEDS typically occurs in childhood, with a large-scale survey finding an average age of onset around 9 years. Many children with hEDS are described as clumsy, prone to injury, or complaining of growing pains that seem disproportionate. They may avoid sports because they keep getting hurt, or they may excel at gymnastics and dance because their flexibility is celebrated — at least until the injuries start accumulating. Recognizing hEDS in children matters not because there is a cure, but because there are things that genuinely help: targeted physical therapy, occupational therapy, education around pacing and flare management, and a coordinated care approach that prevents years of unnecessary suffering and misdiagnosis.
What Treatment Actually Looks Like
Treatment for hEDS is not curative — there is no medication that corrects the underlying collagen abnormality. But hEDS is very manageable, and the difference between managed and unmanaged hEDS can be dramatic.
Physical therapy designed specifically for hypermobility is the cornerstone of treatment, focused on building strength around unstable joints rather than increasing flexibility. Occupational therapy helps with daily task adaptation and assistive devices. Managing comorbidities like POTS, chronic pain, and GI symptoms requires a coordinated team that understands how these conditions connect rather than treating each one in isolation. Pain management, mental health support, sleep treatment, and nutritional guidance all play roles in comprehensive hEDS care. The goal is not perfection — it is building a sustainable daily life with fewer flares, less pain, and more function.
How Thunderbird Family Medicine Can Help
At Thunderbird Family Medicine, Dr. Scott Marquard works with hEDS patients across the full range of the condition — newly diagnosed patients trying to understand what comes next, patients who have been living with hEDS for years with fragmented care, and patients who are still in the middle of their diagnostic journey and need a provider who will take their symptoms seriously.
We understand that hEDS does not look the same twice. We understand the diagnostic delay, the exhaustion of years without answers, and the frustration of a medical system that has historically been poorly equipped to handle a multisystem condition without a simple test. That is not the care you will receive here.
If you or someone in your family is dealing with joint hypermobility, chronic pain, unexplained fatigue, frequent injuries that do not add up, POTS, or a cluster of symptoms that has never had a satisfying explanation — come talk to us. Getting the right diagnosis is the beginning of a different kind of life.
Schedule an appointment with Dr. Marquard at Thunderbird Family Medicine and let’s figure out what is actually going on.
This post is for educational purposes and does not constitute a medical diagnosis or individualized medical advice. If you believe you or a family member may have hEDS, please consult a qualified healthcare provider for a formal evaluation.