Ehlers-Danlos syndrome: a plain-language guide built from published research

Please read this first. This guide is a companion to your medical team, not a replacement, and it is not medical advice. Everything here is tied to published research. If something you expected is not here, it almost always means we have not mapped a source for it yet, not that it is unknown to medicine. Ehlers-Danlos syndrome is an early, growing map, so it will look incomplete on purpose: we would rather show less and have every line be something you can check than fill the page with claims we cannot stand behind. For anything about your own situation, your clinicians hold the full picture. How this guide is built and why.

What it is

EDS is a group of inherited conditions where the body's connective tissue, the material that gives skin, joints, and blood vessels their strength and stretch, is built differently. This can make joints very loose, skin stretchy or fragile, and in some forms can make blood vessels and organs prone to tearing.

The types

Each type below is drawn from the graph. Where a plain-language summary exists it is shown; otherwise the defining clinical features are shown and labelled as such.

Classical EDS (cEDS)

A form of EDS with very stretchy, fragile skin and loose joints, usually caused by changes in collagen V genes.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Last reviewed2026-06-10

Classical-like EDS (clEDS)

Caused by a shortage of the protein tenascin-X. It brings very stretchy skin (without the thin scarring seen in classical EDS), loose joints, and easy bruising.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:37007968

Notesplain_language confirmed from PMID:28306229 via curation 2026-06-10. plain_language confirmed from PMID:37007968 via curation 2026-06-10.

Last reviewed2026-06-10

Cardiac-valvular EDS (cvEDS)

A rare type whose main feature is progressive heart valve disease, alongside loose joints and stretchy skin. It is caused by changes in the COL1A2 gene.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:30821104

Notesplain_language confirmed from PMID:28306229 via curation 2026-06-10. plain_language confirmed from PMID:30821104 via curation 2026-06-10.

Last reviewed2026-06-10

Vascular EDS (vEDS)

The most serious form, where blood vessels and hollow organs can tear. Caused by changes in the COL3A1 gene.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Last reviewed2026-06-10

Hypermobile EDS (hEDS)

The most common form, diagnosed by clinical signs because no causing gene has been found yet.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Last reviewed2026-06-10

Arthrochalasia EDS (aEDS)

A rare type marked by very loose joints, hips dislocated from birth, stretchy skin, and low muscle tone.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:35162892

Notesplain_language confirmed from PMID:28306229 via curation 2026-06-10. plain_language confirmed from PMID:35162892 via curation 2026-06-10.

Last reviewed2026-06-10

Dermatosparaxis EDS (dEDS)

A very rare type with extremely fragile, loose skin, heavy bruising, and distinctive facial features. Caused by a deficiency of the ADAMTS-2 enzyme.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:26765342

Notesplain_language confirmed from PMID:28306229 via curation 2026-06-10. plain_language confirmed from PMID:26765342 via curation 2026-06-10.

Last reviewed2026-06-10

Kyphoscoliotic EDS (kEDS)

Marked by a worsening curve of the spine, muscle weakness, and hearing loss, along with loose joints and stretchy skin.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:28617417

Notesplain_language confirmed from PMID:28306229 via curation 2026-06-10. plain_language confirmed from PMID:28617417 via curation 2026-06-10.

Last reviewed2026-06-10

Brittle Cornea Syndrome (BCS)

Caused by changes in the ZNF469 or PRDM5 genes, mainly affecting the eyes: the cornea becomes thin and fragile.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:24895405

Notesplain_language confirmed from PMID:28306229 via curation 2026-06-10. plain_language confirmed from PMID:24895405 via curation 2026-06-10.

Last reviewed2026-06-10

Spondylodysplastic EDS (spEDS)

A rare type caused by changes in one of three genes (B4GALT7, B3GALT6, or SLC39A13), affecting connective tissue and bone development.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:28882145

Notesplain_language confirmed from PMID:28306229 via curation 2026-06-10. plain_language confirmed from PMID:28882145 via curation 2026-06-10.

Last reviewed2026-06-10

Musculocontractural EDS (mcEDS)

A type caused by changes in the CHST14 (or DSE) gene, which alters how connective tissue is built.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:31905796

Notesplain_language confirmed from PMID:28306229 via curation 2026-06-10. plain_language confirmed from PMID:31905796 via curation 2026-06-10.

Last reviewed2026-06-10

Myopathic EDS (mEDS)

A type of EDS caused by changes in the COL12A1 gene.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:37353357

Notesplain_language confirmed from PMID:28306229 via curation 2026-06-10. plain_language confirmed from PMID:37353357 via curation 2026-06-10.

Last reviewed2026-06-10

Periodontal EDS (pEDS)

Caused by changes in the C1R or C1S genes. Marked by early, severe gum disease that destroys the tissue holding teeth, along with easy bruising and loose joints.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:31749804

Notesplain_language confirmed from PMID:28306229 via curation 2026-06-10. plain_language confirmed from PMID:31749804 via curation 2026-06-10.

Last reviewed2026-06-10

Signs and symptoms

Generalized joint hypermobility

Joints that move further than usual.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Last reviewed2026-06-10

Skin hyperextensibility

Skin that stretches further than usual and is fragile, bruising easily and sometimes tearing.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:36764582

Notesplain_language confirmed from PMID:36764582 via curation 2026-06-10.

Last reviewed2026-06-10

Chronic widespread pain

Long-lasting pain across the body, very common in hypermobile EDS.

Strong evidenceSource: PMID:31904772

Evidence ratingstrong

Study designnarrative review

Confidence (0-1)0.7

Replicationindependently replicated

Last reviewed2026-06-10

Chronic fatigue

Ongoing tiredness. In one study, people in this group reported more fatigue and poorer sleep than others.

Moderate evidenceSource: PMID:31904772

Evidence ratingmoderate

Study designnarrative review

Confidence (0-1)0.7

Replicationunreplicated

Supporting sourcesPMID:42187063

Notesplain_language confirmed from PMID:42187063 via curation 2026-06-10.

Last reviewed2026-06-10

Orthostatic intolerance

Feeling dizzy, lightheaded, or faint on standing. Research finds it more often in people with EDS or joint hypermobility than in others.

Moderate evidenceSource: PMID:29519641

Evidence ratingmoderate

Study designliterature review

Confidence (0-1)0.7

Replicationunreplicated

Notesplain_language confirmed from PMID:29519641 via curation 2026-06-10.

Last reviewed2026-06-10

Tissue fragility / atrophic scarring

Skin, soft tissues, and some organs are fragile and can tear or be damaged more easily than usual.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:36764582

Notesplain_language confirmed from PMID:36764582 via curation 2026-06-10.

Last reviewed2026-06-10

Arterial dissection and rupture

Tearing of large blood vessels, the main danger in vascular EDS.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Last reviewed2026-06-10

Conditions often mentioned alongside

These come up often in connection with this condition. Some links are well supported; others are debated. Each one below shows how strong the evidence is and where it stands.

Gastrointestinal dysmotility

Problems with how the gut moves food along, such as bloating, constipation, or slow stomach emptying. It is reported as a common comorbidity in EDS.

Moderate evidenceSource: PMID:31904772

Evidence ratingmoderate

Study designnarrative review

Confidence (0-1)0.7

Replicationpartially replicated

Supporting sourcesPMID:41432355, PMID:41156242, PMID:40002882

Last reviewed2026-06-10

Postural orthostatic tachycardia syndrome (POTS)

A condition where heart rate jumps on standing, often reported alongside hypermobile EDS.

Experts disagreeSource: PMID:29519641

Evidence ratingmoderate

Study designliterature review

Confidence (0-1)0.7

Replicationpartially replicated

Supporting sourcesPMID:29519641, PMID:41432355, PMID:42098539, PMID:41156242

Contradicting sourcesPMID:31267471

NotesCo-occurrence consistently observed; causal/mechanistic relationship contested (see PMID:31267471).

Last reviewed2026-06-10

Supports the link:PMID:29519641, PMID:41432355, PMID:42098539, PMID:41156242

Questions the link:PMID:31267471

In short:Co-occurrence consistently observed; causal/mechanistic relationship contested (see PMID:31267471).

Mast cell activation syndrome (MCAS)

A proposed condition of overactive mast cells, often claimed to occur with hypermobile EDS, but the link and even the definition are contested.

Experts disagreeSource: PMID:31267471

Evidence ratingdisputed

Study designcritical literature review

Confidence (0-1)0.7

Replicationunreplicated

Contradicting sourcesPMID:31267471

NotesAssociation is clinically asserted but evidence is judged lacking by this critical review. Modeled as a disputed signal, not canon.

Last reviewed2026-06-10

Questions the link:PMID:31267471

In short:Association is clinically asserted but evidence is judged lacking by this critical review. Modeled as a disputed signal, not canon.

How it is diagnosed

Vascular EDS (vEDS)

Diagnosed using: Molecular genetic testing.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Last reviewed2026-06-10

Classical EDS (cEDS)

Diagnosed using: Molecular genetic testing.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Last reviewed2026-06-10

Hypermobile EDS (hEDS)

Diagnosed using: 2017 hEDS clinical diagnostic criteria.

Widely acceptedSource: PMID:28306229

Evidence ratingwell_established

Study designinternational consensus classification

Confidence (0-1)0.7

Replicationindependently replicated

Supporting sourcesPMID:31904772

Last reviewed2026-06-10

Treatment and management

What the research describes, not a recommendation. Treatment decisions belong with your clinician.

This covers treatments that appear in the published research mapped here. Investigational and experimental therapies are not included, so their absence is a boundary of this map, not a sign they do not exist.

Celiprolol

A blood-pressure medicine (a beta-blocker) used off its original purpose to help protect blood vessels in vascular EDS.

Used to help with: Arterial dissection and rupture.

Possible side effect noted: Fatigue (celiprolol).

Strong evidenceSource: PMID:20825986

Evidence ratingstrong

Study designrandomized controlled trial

Sample size53

Confidence (0-1)0.7

Replicationpartially replicated

Supporting sourcesPMID:33223285

Last reviewed2026-06-10

Physical therapy / physiotherapy

Guided exercise and movement therapy to support joints and reduce symptoms.

Used to help with: Generalized joint hypermobility.

Limited evidenceSource: PMID:28306230

Evidence ratingweak

Study designguideline / evidence review

Confidence (0-1)0.7

Replicationunreplicated

NotesCentral to management but evidence base is limited per this guideline.

Last reviewed2026-06-10

Physical therapy / physiotherapy

Guided exercise and movement therapy to support joints and reduce symptoms.

Used to help with: Chronic widespread pain.

Limited evidenceSource: PMID:28306230

Evidence ratingweak

Study designguideline / evidence review

Confidence (0-1)0.7

Replicationunreplicated

Last reviewed2026-06-10

What is still debated

Research leaves some questions open. These are points where qualified researchers currently disagree. This guide does not pick a winner the field has not.

Postural orthostatic tachycardia syndrome (POTS) and Hypermobile EDS (hEDS)

Co-occurrence consistently observed; causal/mechanistic relationship contested (see PMID:31267471).

Experts disagreeSource: PMID:29519641

Evidence ratingmoderate

Study designliterature review

Confidence (0-1)0.7

Replicationpartially replicated

Supporting sourcesPMID:29519641, PMID:41432355, PMID:42098539, PMID:41156242

Contradicting sourcesPMID:31267471

NotesCo-occurrence consistently observed; causal/mechanistic relationship contested (see PMID:31267471).

Last reviewed2026-06-10

Mast cell activation syndrome (MCAS) and Hypermobile EDS (hEDS)

Association is clinically asserted but evidence is judged lacking by this critical review. Modeled as a disputed signal, not canon.

Experts disagreeSource: PMID:31267471

Evidence ratingdisputed

Study designcritical literature review

Confidence (0-1)0.7

Replicationunreplicated

Contradicting sourcesPMID:31267471

NotesAssociation is clinically asserted but evidence is judged lacking by this critical review. Modeled as a disputed signal, not canon.

Last reviewed2026-06-10

Turn this into questions for your doctor

The hardest part is often knowing what to ask. PatientLead Health helps families turn what is on this page into the right questions for their care team.

Prepare for your appointment with PatientLead Health →

How to read the evidence labels

Widely acceptedSpecialists broadly agree on this.

Strong evidenceBacked by solid, repeated research.

Moderate evidenceReasonable evidence, still being confirmed.

Limited evidenceSome evidence, but not yet convincing.

Early evidenceAn early finding that needs more study.

Experts disagreeResearchers actively disagree about this.

Where this comes from

This guide is built from 27 published source(s). Every claim above links back to one of them. Click any source ID to read the original on PubMed.

PMID:20825986 · Effect of celiprolol on prevention of cardiovascular events in vascular Ehlers-Danlos syndrome (BBEST): a prospective randomised, open, blinded-endpoints trial

PMID:24895405 · title on PubMed

PMID:24922459 · Survival is affected by mutation type and molecular mechanism in vascular Ehlers-Danlos syndrome (EDS type IV).

PMID:24922461 · Pregnancy-related deaths and complications in women with vascular Ehlers-Danlos syndrome.

PMID:28306229 · The 2017 international classification of the Ehlers-Danlos syndromes

PMID:28306230 · The evidence-based rationale for physical therapy treatment of children, adolescents, and adults diagnosed with joint hypermobility syndrome/hypermobile Ehlers Danlos syndrome

PMID:28617417 · title on PubMed

PMID:28882145 · title on PubMed

PMID:29519641 · Postural tachycardia syndrome and other forms of orthostatic intolerance in Ehlers-Danlos syndrome

PMID:29551664 · title on PubMed

PMID:31267471 · The Relationship Between Hypermobile Ehlers-Danlos Syndrome (hEDS), Postural Orthostatic Tachycardia Syndrome (POTS), and Mast Cell Activation Syndrome (MCAS)

PMID:31749804 · title on PubMed

PMID:31904772 · The Many Facets of Hypermobile Ehlers-Danlos Syndrome

PMID:31905796 · title on PubMed

PMID:33223285 · Celiprolol Treatment in Patients with Vascular Ehlers-Danlos Syndrome

PMID:35162892 · title on PubMed

PMID:37007968 · title on PubMed

PMID:37353357 · title on PubMed

PMID:37813462 · Genetic complexity of diagnostically unresolved Ehlers-Danlos syndrome

PMID:38623759 · title on PubMed

PMID:38926786 · title on PubMed

PMID:40002882 · title on PubMed

PMID:41156242 · title on PubMed

PMID:41173024 · title on PubMed

PMID:41432355 · title on PubMed

PMID:42005011 · title on PubMed

PMID:42098539 · title on PubMed