Signs and symptoms of the most common form of Ehlers-Danlos syndrome include:
- Overly flexible joints. Because the connective tissue that holds joints together is looser, your joints can move far past the normal range of motion. Small joints are affected more than large joints. You might also be able to touch the tip of your nose with your tongue.
- Stretchy skin. Weakened connective tissue allows your skin to stretch much more than usual. You may be able to pull a pinch of skin up away from your flesh, but it will snap right back into place when you let go. Your skin might also feel exceptionally soft and velvety.
- Fragile skin. Damaged skin often doesn't heal well. For example, the stitches used to close a wound often will tear out and leave a gaping scar. These scars may look thin and crinkly.
- Fatty lumps at pressure points. These small, harmless growths can occur around the knees or elbows and may show up on X-rays.
Symptom severity can vary from person to person. Some people with Ehlers-Danlos syndrome will have overly flexible joints but few or none of the skin symptoms.
Vascular Ehlers-Danlos syndrome
People who have the vascular subtype of Ehlers-Danlos syndrome often share distinctive facial features of a thin nose, thin upper lip, small earlobes and prominent eyes. They also have thin, translucent skin that bruises very easily. In fair-skinned people, the underlying blood vessels are very visible through the skin.
One of the most severe forms of the disorder, vascular Ehlers-Danlos syndrome can weaken your heart's largest artery (aorta), as well as the arteries to your kidneys and spleen. A rupture of any of these blood vessels can be fatal. The vascular subtype also can weaken the walls of the uterus or large intestines — which may also rupture.
Different subtypes of Ehlers-Danlos syndrome are associated with a variety of genetic causes, some of which are inherited and passed on from parent to child.
If you have some subtypes of Ehlers-Danlos syndrome, such as the vascular variety, there's a 50 percent chance that you'll pass the gene on to each of your children.
Complications depend on the types of signs and symptoms you have. For example, overly flexible joints can result in joint dislocations and early-onset arthritis. Fragile skin may develop prominent scarring.
People who have vascular Ehlers-Danlos syndrome are at risk of often fatal ruptures of major blood vessels. Some organs, such as the uterus and intestines, also may rupture. Pregnancy can increase these risks.
If you have a personal or family history of Ehlers-Danlos syndrome and you're thinking about starting a family, you may benefit from talking to a genetic counselor — a health care professional trained to assess the risk of inherited disorders. Genetic counseling can help you understand the inheritance pattern of the type of Ehlers-Danlos syndrome that affects you and the risks it poses for your children.