Inherited collagen defects in collagen in the extracellular matrices
of various tissues.
Clinical suspicion & diagnosis
The unifying themes among the disorders are
- fragility of tissues
- joint hypermobility
- skin hyperextensibility.
These features plus the presence of a family history of the exact same
subtype of EDS suspected are the hallmarks of diagnosis.
(formerly Types I & II)
Marked joint hypermobility, skin hyperextensibility (laxity), and fragility.
Autosomal dominant inheritance.
(formerly Type III)
Joint hypermobility is the major manifestation. Autosomal dominant.
(formerly Type IV, the arterial form)
Spontaneous rupture of arteries and bowel is a serious manifestation
that can lead to death. Autosomal dominant.
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(formerly Type VI)
Severe curvature of the spine (scoliosis). Fragile globe of the eyes,
significant skin and joint laxity are typical features. Inherited as autosomal
(formerly type VIIB, arthrochalasis multiplex congenita)
Patients are short in height and severely affected by joint laxity and
dislocations. Skin involvement is variable. Autosomal dominant and recessive
inheritance is possible.
A skin biopsy can be used to diagnose this disorder.
(formerly Type VIIC)
Patients have severely fragile skin that is soft and doughy with sagging
and folding. This rare form of Ehlers-Danlos can be diagnosed with a skin
Other rare variant types have been reported in single families.