If your joints bend farther than they should, or if you heal slowly and bruise easily, you may have heard the term EDS. Ehlers-Danlos syndromes are a group of inherited connective tissue disorders. Connective tissue is the material that holds your skin, joints, blood vessels, and organs together. When it is weaker or built differently than normal, many body systems can be affected. There are several types of EDS, and each has its own set of symptoms and its own genetic cause.
What Is Eds Syndrome Symptoms Types Diagnosis?
Ehlers-Danlos syndrome is not one disease. It is a family of at least 13 recognized subtypes, according to the international classification that clinicians use. All of them share a problem with connective tissue, but they differ in which genes are involved and which parts of the body are most affected.
The most common type by far is hypermobile EDS, often shortened to hEDS. Unlike most other types, no single gene has been identified for hEDS. That means it is diagnosed based on symptoms and a physical exam rather than a blood test. The other types are generally rarer and each has a known genetic cause.
Connective tissue is mostly made of proteins. Collagen is the most abundant one. In many types of EDS, a gene that helps build or process collagen does not work correctly. The result is tissue that is stretchier, weaker, or less stable than it should be. That is why joints, skin, and blood vessels are often the first places problems show up.
What Are the Main Symptoms of EDS?
Symptoms vary widely depending on the type. Some people have mild joint looseness and few other issues. Others have serious problems affecting blood vessels or internal organs. Even within the same type, two people in the same family can have very different experiences.
Across most types, some symptoms are common:
- Joints that move beyond the normal range, called joint hypermobility
- Joint pain and joints that dislocate or partially dislocate easily
- Skin that is unusually soft, stretchy, or velvety
- Skin that bruises easily or heals with thin, wide scars
- Chronic fatigue
- Problems with the digestive tract, such as constipation or reflux
Hypermobile EDS tends to involve widespread joint pain, frequent joint injuries, and often other issues like dizziness when standing, digestive problems, and chronic pain. These overlapping symptoms are common and can be frustrating to sort out, because many of them also occur in people who do not have EDS.
The vascular type of EDS is different and more serious. It affects blood vessels and hollow organs. People with this type are at higher risk of blood vessel tears and organ rupture. Because these events can be life-threatening, the vascular type is treated with more caution and regular monitoring.
What Are the Different Types of EDS?
Clinicians currently recognize 13 subtypes. A few are far more common than the rest. The table below describes the general features of some of the better-known types.
| Type | Main Features | Genetic Cause |
|---|---|---|
| Hypermobile (hEDS) | Joint hypermobility, joint pain, soft skin | Unknown; no single gene identified |
| Classical (cEDS) | Stretchy skin, fragile skin, wide scars, joint looseness | Usually COL5A1 or COL5A2 |
| Vascular (vEDS) | Fragile blood vessels and organs, thin skin, easy bruising | Usually COL3A1 |
| Kyphoscoliotic | Severe joint looseness, curvature of the spine, weak muscle tone | PLOD1 or FKBP14 |
| Arthrochalasia | Severe joint looseness, hip dislocation at birth | COL1A1 or COL1A2 |
This is only a partial list. The remaining types are rare and each affects specific tissues in different ways. Some involve the heart, some the eyes, and some the teeth or gums. Because the rarer types are so uncommon, many clinicians may see only a handful of cases in an entire career.
One point worth clarifying: hypermobile EDS is not simply “being flexible.” Many healthy people are flexible without having EDS. The difference is that in hEDS, the hypermobility comes with pain, injuries, and other body-wide symptoms that affect daily life.
How Is EDS Diagnosed?
Diagnosis depends on the type. For most types other than hypermobile EDS, diagnosis is confirmed through genetic testing. A blood sample is analyzed for changes in the specific genes known to cause that type. If a known disease-causing variant is found, the diagnosis is confirmed.
Hypermobile EDS is the exception. Because no single gene has been identified, it is diagnosed clinically. That means a clinician uses a set of criteria based on the person’s history, physical exam, and symptoms rather than a lab test. The current criteria require evidence of generalized joint hypermobility, plus other features such as joint pain, soft skin, or a family history, and they require ruling out other conditions that can cause similar symptoms.
This is a key point. Many conditions can look like hEDS. They include other connective tissue disorders and conditions that cause joint pain and fatigue. A careful clinician will consider these before settling on a diagnosis. There is no single blood test or scan that confirms hEDS, and anyone who claims otherwise is not describing standard medical practice.
How Is EDS Treated?
There is no cure for EDS. Treatment focuses on managing symptoms and preventing injuries. The approach depends heavily on the type and on which body systems are affected.
For hypermobile and classical types, care often includes:
- Physical therapy to strengthen muscles that support unstable joints
- Pain management, which may include medication in some cases
- Bracing or splinting for specific joints
- Managing related issues like digestive problems or dizziness
Physical therapy is widely used and is generally considered a cornerstone of care for joint instability. The goal is not to make joints tighter, but to build the muscle support around them. Some clinicians also recommend avoiding high-impact activities that stress joints. This is common practice, though the evidence base for specific exercise programs in EDS is still limited.
For the vascular type, care is more cautious. People with vEDS may need regular monitoring of their blood vessels and blood pressure control. They are often advised to avoid certain strenuous activities and contact sports because of the risk to blood vessels. Any decision about activity should come from a clinician familiar with vEDS.
It is important to be honest about the evidence here. Many treatments for EDS are based on clinical experience and the biology of the condition rather than large clinical trials. That does not mean they are ineffective, but it does mean the research is still catching up to practice.
Is EDS Inherited?
Most types of EDS are inherited, meaning they run in families. The pattern of inheritance differs by type.
Several types, including classical and vascular EDS, are usually inherited in an autosomal dominant pattern. That means a person needs only one copy of the changed gene from one parent to develop the condition. Each child of an affected parent has a 50 percent chance of inheriting it.
Some other types are inherited in an autosomal recessive pattern. In those cases, a person must inherit a changed gene from both parents. Parents may be carriers without having symptoms themselves.
Hypermobile EDS tends to run in families, but because no gene has been identified, the exact inheritance pattern is not fully understood. It often appears to cluster in families, but the genetic basis remains an active area of research.
Anyone with a confirmed diagnosis who is considering having children may want to speak with a genetic counselor. They can explain the specific inheritance pattern for that type and what it means for family planning.
When Should You See a Doctor?
See a doctor if you have joint hypermobility along with ongoing joint pain, frequent dislocations, or other symptoms that affect your daily life. Also seek care if you bruise very easily, have unusual scarring, or have a family history of EDS or related conditions.
Some symptoms need urgent attention. Get emergency care right away if you have sudden severe pain in your chest, abdomen, or back, especially if you have or may have the vascular type. These can be signs of a blood vessel or organ problem that needs immediate treatment.
Because EDS can affect many body systems, diagnosis is often a process rather than a single visit. It may involve a primary care doctor, a geneticist, a rheumatologist, and other specialists. That can take time, and that is normal for a condition this varied.
Frequently Asked Questions
Is Ehlers-Danlos syndrome the same as being double-jointed?
No. Being double-jointed means having flexible joints, which is common and often harmless. EDS involves hypermobility along with pain, injuries, or other body-wide symptoms, and it is a diagnosed medical condition.
Can EDS be cured?
There is no cure for EDS. Treatment focuses on managing symptoms, preventing injuries, and addressing problems in affected body systems.
How do doctors test for EDS?
Most types are confirmed with genetic testing that looks for changes in specific genes. Hypermobile EDS is the exception and is diagnosed based on symptoms and a physical exam, since no single gene for it has been found.
Is EDS dangerous?
It depends on the type. Hypermobile and classical types mainly affect joints and skin, while the vascular type can cause serious blood vessel and organ problems. The vascular type is the most serious and needs careful monitoring.

