What Is Ehlers-Danlos Syndrome? Understanding the Basics

Ehlers-Danlos syndromes (EDS) are a group of inherited disorders that affect connective tissue — the body's "glue" that supports skin, joints, blood vessels, and organs. Our diseases directory includes several EDS types, each marked with distinctive zebra striping.

Why the Zebra?

The EDS community adopted the zebra as its symbol with a saying from medical training: "When you hear hoofbeats, think horses, not zebras." In other words, doctors are taught to look for common explanations first. But sometimes, it really is a zebra — a rare condition hiding behind common symptoms.

The Main Types

There are 13 recognized types of EDS. The most common include:

• Hypermobile EDS (hEDS): Characterized by joint hypermobility, chronic pain, and tissue fragility. The genetic cause is not yet identified, making diagnosis clinical.
• Classical EDS (cEDS): Marked by highly elastic skin, easy bruising, and joint hypermobility.
• Vascular EDS (vEDS): The most serious type, involving fragile blood vessels and organs that can rupture.

Common Symptoms

Across types, people with EDS may experience:

• Joints that dislocate or subluxate frequently
• Chronic musculoskeletal pain
• Soft, stretchy, or fragile skin
• Poor wound healing and easy bruising
• Gastrointestinal issues and dysautonomia (including POTS)

The Diagnostic Journey

EDS is notoriously underdiagnosed. Many patients spend years — sometimes decades — being told their symptoms are "all in their head" or attributed to separate, unrelated issues. The average time to diagnosis for hypermobile EDS is estimated at over a decade from symptom onset.

Living with EDS

There is no cure for EDS, but management strategies help:

• Physical therapy focused on stabilizing hypermobile joints
• Pain management tailored to chronic musculoskeletal pain
• Bracing and assistive devices for unstable joints
• Cardiac monitoring for vascular and related complications

If you suspect EDS, seek a geneticist or rheumatologist familiar with connective tissue disorders. Our diseases directory can help you learn more about each type.