Curious About Genetic Testing for a Connective Tissue Disorder? Here's Why You Shouldn't Just Focus on EDS.

If you've spent any time in the chronic illness corners of TikTok or Instagram lately, you've seen EDS.

Ehlers-Danlos syndrome, particularly the hypermobile type, has gained enormous visibility on social media in the last few years. Patients are sharing their stories. Symptoms that used to get dismissed are being named out loud. People who spent decades being told they were just flexible, or that it was all in their head, are finally feeling seen.

That visibility is a good thing. EDS is real, it's underdiagnosed, and the frustration the EDS community carries is valid. The diagnostic odyssey for these patients can take more than a decade.

But that same visibility has had an unintended effect. A lot of patients now come to me asking specifically about EDS, and only EDS. There's something I tell every one of them.

I want to make sure we aren't missing something else.

A note on hypermobile EDS

Before going any further, there's something important to know if you suspect you have EDS.

Hypermobile EDS is the most common type of EDS. It's also the type that gets the most attention on social media. And as of right now, there is no genetic test or known genetic finding that can confirm or rule out hypermobile EDS.

That means hypermobile EDS is a clinical diagnosis. It's based on a physical evaluation against a set of established criteria, not a blood draw.

As a genetic counselor, performing the physical exam and clinical evaluation needed to diagnose hypermobile EDS is outside my scope of practice. That kind of diagnosis is made by a physician with the right training. What I do is the genetic piece: ordering and interpreting the testing that helps us understand whether something else is going on.

And that piece is genuinely useful. If your genetic testing comes back negative, that significantly lowers the chance that what you're dealing with is one of the connective tissue disorders that does have a known genetic cause. That gives you and your medical team a clearer path forward. It means a clinical evaluation for hypermobile EDS becomes the logical next step, with most of the other diagnostic possibilities already ruled out.

Connective tissue disorders are a broad category

Connective tissue is what gives structure to your skin, your joints, your blood vessels, and your organs. When the genes that build connective tissue don't work the way they should, the symptoms can show up almost anywhere. Joints that dislocate. Skin that bruises easily. Blood vessels that are more fragile than they should be. A heart valve that doesn't close properly.

EDS is one connective tissue disorder. There are dozens of others.

When I order genetic testing for someone with hypermobility or other connective tissue symptoms, I'm not running an EDS-only panel. I'm running a comprehensive connective tissue panel that looks at many genes at once. The genes associated with EDS, but also with the broader category of conditions that can present in similar ways.

A few of the conditions I look for beyond EDS

There are far more than I can cover in a blog post, and the right testing depends on the patient's specific symptoms, family history, and clinical picture. But here are some of the conditions I think about regularly.

Marfan syndrome is caused by changes in the FBN1 gene. It affects connective tissue throughout the body, but the most important reason to identify it is its effect on the aorta. Without monitoring, Marfan can lead to life-threatening cardiovascular complications.

Loeys-Dietz syndrome shares some features with Marfan but has its own clinical profile. It also carries significant cardiovascular implications and benefits from regular imaging.

Vascular EDS is a subtype of EDS, but it's worth calling out separately. It affects blood vessels and hollow organs, and its management is meaningfully different from other forms of EDS. Accurate diagnosis here is critical for safety. Even routine procedures need to be approached differently in someone with vascular EDS.

Osteogenesis imperfecta, sometimes called brittle bone disease, is caused by changes in collagen genes. Some of its features overlap with certain forms of EDS, which is part of why a thorough evaluation matters.

Stickler syndrome affects connective tissue but often shows up first in the eyes and ears. It's frequently missed because patients see different specialists for different symptoms without anyone connecting the dots.

Cutis laxa, arterial tortuosity syndrome, pseudoxanthoma elasticum, Weill-Marchesani syndrome, and many others all live under the broader connective tissue umbrella. Some affect the heart and blood vessels. Some affect the skin or skeletal system. Some are well-known. Many are rare and don't get talked about online, which means patients with these conditions often go years without anyone considering them.

Why the right diagnosis matters

When a patient comes to me suspecting EDS, the question I'm trying to answer isn't just whether they have EDS. It's what the most accurate explanation is for what they're experiencing, and what that means for their care.

The answer changes things.

It changes who's on your medical team. Some of these conditions need a cardiologist. Some need ophthalmology follow-up. Some change how a surgeon should approach a routine procedure.

It changes your screenings. Marfan, Loeys-Dietz, and several other conditions call for regular cardiac imaging. Vascular EDS changes how providers should manage even small injuries. Some of these diagnoses come with eye exam recommendations, bone density monitoring, or other specialist follow-up that wouldn't be on the radar otherwise.

It changes what your family needs to know. Most connective tissue disorders are inherited, so a diagnosis in you is information for your siblings, your parents, and your children.

And it changes how you walk through the world. For a lot of my patients, naming what's actually going on is the first step toward feeling like they have agency over their health again.

What testing looks like

Genetic testing for connective tissue disorders has come a long way. Instead of testing for one condition at a time, we can run comprehensive panels that look at many CTD-related genes simultaneously. The panel I typically order covers the genes associated with dozens of connective tissue conditions, both the ones that show up in patient communities online and the ones that almost never do.

Testing isn't always the right first step, though. And a positive result isn't always the end of the story. For some forms of EDS, especially hypermobile EDS, there isn't a genetic test currently available. Diagnosis is clinical. A genetic counselor can help you understand what testing can and can't tell you, and what the results actually mean.

If you're not sure where to start

If you've been told you might have EDS, or you've suspected it yourself but haven't been able to get clear answers, let's talk. We offer free 10-minute discovery calls to figure out whether genetic evaluation is the right next step for you.

You don't need a referral. You don't need a diagnosis already in hand. You just need answers.

Book a discovery call →

This blog post is for educational purposes only. It is not medical advice and should not be used to diagnose yourself or anyone else with a genetic condition. If you have questions about your own health or family history, please speak with a qualified healthcare provider.