EDS vs. Hypermobility: What's the Difference, and Why Does Your Pelvic Floor Care?

If you've ever been told you're "double-jointed," bruise easily, or have joints that seem to slip out of place more than they should, you may have wondered whether you have Ehlers-Danlos Syndrome (EDS), Hypermobility Spectrum Disorder (HSD), or just naturally flexible joints. These terms get used interchangeably online, but they're not the same thing — and the distinction matters, especially when it comes to your pelvic floor.

As a pelvic floor and orthopedic physical therapist, I see this connection often: patients with hypermobile joints frequently also struggle with bladder leakage, pelvic organ prolapse symptoms, pelvic pain, or a pelvic floor that feels like it just can't "hold." Understanding why connective tissue laxity affects the pelvis — not just the knees and shoulders — is the key to treating it effectively.

What Is Joint Hypermobility?

Joint hypermobility simply means your joints move beyond the typical range of motion. Many people are hypermobile and have no symptoms at all — it can even be an advantage in dance, gymnastics, or yoga. Hypermobility becomes a clinical concern when it's accompanied by pain, instability, injuries, or systemic symptoms.

Hypermobility Spectrum Disorder (HSD)

HSD is the diagnosis given when someone has symptomatic joint hypermobility — pain, recurrent subluxations or dislocations, fatigue, or instability — but doesn't meet the full genetic and clinical criteria for a hereditary connective tissue disorder like EDS. HSD sits on a spectrum, and for many patients it's a "not otherwise specified" category: real, often disabling, but without a confirmed underlying diagnosis.

Ehlers-Danlos Syndrome (EDS)

EDS is a group of hereditary connective tissue disorders caused by changes in how the body makes or processes collagen. There are 13 recognized subtypes, most of which are rare and can be confirmed with genetic testing. The exception is hypermobile EDS (hEDS) — the most common subtype — which currently has no identified genetic marker and is diagnosed clinically, based on a combination of:

Generalized joint hypermobility (often measured with the Beighton score)
A personal or family history of soft tissue complications, chronic pain, or systemic features
Ruling out other connective tissue conditions

Because hEDS shares so much overlap with HSD on the surface, distinguishing between the two can be tricky — and honestly, from a treatment standpoint, the day-to-day physical therapy approach is often similar either way.

Similarities Between EDS and HSD

Joint instability and a tendency toward subluxation or dislocation
Chronic musculoskeletal pain, often in multiple regions
Fatigue that's disproportionate to activity level
Poor proprioception (your brain's ability to sense where your joints are in space)
Delayed healing or easy bruising
Frequent overlap with conditions like POTS (postural orthostatic tachycardia syndrome), mast cell activation issues, anxiety, and GI dysmotility

Key Differences

Genetic basis : HSD- Not identified/confirmed EDS(esp hEDS)- confirmed in 12 of 13 types; hEDS diagnosed clinically
Systemic Involvement : HSD- Usually more localized to joints. EDS(esp hEDS)-Often broader including skin, vascular, GI, autonomic systems HSD EDS (especially hEDS)
Skin findings: HSD- Typically minimal . EDS(esp hEDS)-Soft, velvety, or hyper extensible skin common
Diagnostic criteria : HSD-Symptom-based, less rigid. EDS(esp hEDS)- Formal criteria (2017 International Classification)
Prognosis/monitoring: HSD- Generally joint-focused . EDS(esp hEDS)-May require monitoring for vascular or organ involvement depending on subtype

For most patients, especially those without red-flag features like vascular fragility, the practical rehab approach doesn't change dramatically based on which label applies. What matters clinically is recognizing that connective tissue laxity is a whole-body issue — and the pelvic floor is connective tissue too.

The Pelvic Floor Connection

The pelvic floor is a muscular hammock, but it's also richly woven through with fascia, ligaments, and connective tissue that support the bladder, uterus, and rectum. If collagen throughout your body is more elastic or fragile than average, your pelvic support structures are affected right along with your knees and shoulders. This can show up as:

Pelvic organ prolapse. Weaker connective tissue support for the bladder, uterus, or rectum can lead to a sensation of heaviness, bulging, or pressure — sometimes even in younger patients or those who haven't had children.

Stress or urge incontinence. Lax connective tissue around the urethra and bladder neck can reduce the structural support needed for continence, independent of muscle strength alone.

Pelvic pain and dyspareunia (painful intercourse). Joint instability in the sacroiliac joints, pubic symphysis, or hips can refer pain into the pelvis. Additionally, pelvic floor muscles may overwork to compensate for lax ligamentous support, becoming tight, guarded, and painful — a pattern sometimes called "instability masquerading as tightness."

Bowel dysfunction. Rectal prolapse symptoms, straining, or a sense of incomplete emptying can stem from the same connective tissue laxity affecting the rectal support structures.

Sacroiliac and pubic symphysis instability. These joints rely heavily on ligamentous integrity. In hypermobile patients, they can become a significant pain generator that radiates into the pelvic floor.

Why This Changes the Treatment Approach

Standard pelvic floor PT often emphasizes strengthening — and strengthening still matters here. But hypermobile and EDS patients need a modified approach:

Prioritize stability over flexibility. Many hypermobile patients are already very flexible; the goal is building neuromuscular control and joint stability, not increasing range of motion.
Address the whole kinetic chain. Hip, core, and sacroiliac stability directly influence pelvic floor function — treating the pelvic floor in isolation rarely resolves symptoms.
Train proprioception deliberately. Because joint position sense is often impaired, exercises need to rebuild the brain-body feedback loop, not just muscle strength.
Avoid overstretching. Deep stretching, which many hypermobile patients gravitate toward because it "feels good," can actually worsen instability over time.
Pace and pressure-manage. Fatigue, autonomic symptoms (especially with co-occurring POTS), and connective tissue fragility mean rehab needs to be dosed carefully rather than pushed aggressively.
Coordinate care. Because EDS and HSD are whole-body conditions, the most successful outcomes usually involve collaboration between pelvic floor PT, orthopedic PT, and sometimes rheumatology, GI, or cardiology depending on symptom overlap.

The Bottom Line

Whether you carry a formal EDS diagnosis or a working diagnosis of HSD, the message for your pelvic floor is the same: your connective tissue affects more than your joints, and it deserves a treatment approach built around stability, not just strength. If you've been told your pelvic floor issues are "just anxiety" or "just weak muscles" and nothing has helped, hypermobility may be the missing piece of the puzzle.

Kaye Sharp, MPT, WHC, is the owner of Sharp Ortho & Pelvic Physical Therapy in Hoover, AL, specializing in pelvic health, women's health, and orthopedic physical therapy, including care for patients with EDS, HSD, and complex hypermobility presentations. To schedule a consultation, visit sharpphysicaltherapy.com or call 205-515-0258.

POTS and Physical Therapy: What Hoover, AL Patients Need to Know

If standing up too fast makes your heart race, your vision blur, or leaves you needing to sit back down — you're not imagining it, and you're not alone. Postural Orthostatic Tachycardia Syndrome, or POTS, affects an estimated 1 in 500 people, most commonly women between their teens and their 40s. And yet many patients spend years bouncing between providers before anyone puts a name to what they're feeling.

If you're in Hoover or the greater Birmingham area and searching for answers, here's what the current research says about POTS — and why physical therapy, done the right way, is one of the most effective tools we have.

What Is POTS, Really?

POTS is a condition of the autonomic nervous system — the part of your body that runs on autopilot, regulating things like heart rate and blood pressure without you thinking about it. When you stand up, your body is supposed to automatically adjust blood flow so your brain stays well-supplied. In POTS, that system misfires. Blood pools in your legs, your heart rate spikes to compensate, and symptoms follow: lightheadedness, rapid heartbeat, brain fog, fatigue, nausea, and sometimes fainting.

It's diagnosed when your heart rate increases by more than 30 beats per minute within 10 minutes of standing, without a drop in blood pressure. Many people living with POTS also have joint hypermobility or a connective tissue condition like Ehlers-Danlos Syndrome (EDS) — more on why that matters below.

Why "Just Exercise More" Feels Impossible (and Isn't the Right Advice)

If you've been told to exercise more and it made you feel worse, that's not a failure on your part — it's a sign the exercise wasn't dosed correctly for a body with POTS. Standard workouts ask your cardiovascular system to fight gravity right away, which is exactly what a dysregulated autonomic system struggles with.

The research-backed approach works differently. It starts you lying down or seated — recumbent bike, rowing, swimming — so your heart doesn't have to work against gravity while it reconditions. Over weeks and months, activity is gradually shifted toward upright positions as your tolerance builds. This isn't a shortcut; it's a deliberate, evidence-based sequence used in programs developed at institutions like UT Southwestern and Children's Hospital of Philadelphia, and it's backed by current systematic reviews identifying exercise as a first-line treatment for POTS.

It's also normal to feel a little worse before you feel better in the first few weeks. That's your nervous system recalibrating — not a sign to stop, but a sign to go slow and stay consistent.

The Daily Habits That Make the Biggest Difference

Alongside exercise, current guidelines point to a few non-negotiables:

Fluids — most guidelines target around 3 liters a day
Sodium — roughly 10 grams a day, which is more than most people expect
Compression — waist-high compression garments to reduce blood pooling in the legs
Positioning — sleeping with your head slightly elevated, and learning counter-pressure techniques (like crossing your legs or tensing your muscles) for symptom flares

None of these replace a supervised reconditioning program, but they make the exercise progression easier to tolerate.

The Connection Most Providers Miss: POTS, Hypermobility, and Your Pelvic Floor

Here's where our practice's background matters. A growing body of research points to significant overlap between POTS, joint hypermobility (including hypermobile EDS), and pelvic floor dysfunction. If you have POTS and you've been dealing with pelvic pain, bladder urgency, or a pelvic floor that never quite feels "right," those two things may not be separate problems.

In hypermobile connective tissue, pelvic floor muscles often aren't weak — they're overworking, trying to create stability your connective tissue isn't providing on its own. That means the standard advice (strengthen it, do more Kegels) can actually make things worse. What helps instead is retraining how your diaphragm, deep core, and pelvic floor coordinate together — which also happens to support better blood pressure regulation and symptom control for POTS itself.

This is a piece of the puzzle that a general cardiac rehab program or a standard physical therapy clinic usually isn't trained to see.

What This Looks Like in Practice

A well-built POTS program should include:

A real assessment — orthostatic vitals, a hypermobility screen, and (when relevant) a pelvic floor and breathing evaluation
A recumbent-first exercise progression, individualized to your own baseline rather than a generic chart
Education on the fluid, salt, and compression habits that support your progress
Ongoing communication with your physician, since POTS management often involves a care team

You Don't Have to Figure This Out Alone

If you're in Hoover, Birmingham, or the surrounding area and you're dealing with POTS symptoms — especially alongside pelvic floor issues, hormonal changes, or joint hypermobility — we'd be glad to talk through what a personalized program could look like for you.

This post is for educational purposes and isn't a substitute for individualized medical advice. Please work with your physician to confirm a POTS diagnosis before starting a new exercise program.