Ehlers-Danlos syndrome (MONDO_0020066, a Monarch Disease Ontology term) can be described as follows. The Ehlers–Danlos syndromes (EDS) are a clinically and genetically heterogeneous group of heritable connective tissue disorders (HCTDs) characterized by joint hypermobility, skin hyperextensibility, and tissue fragility. Also known as: Danlos Disease, Ehlers, Danlos disease, Disease, Ehlers Danlos, Disease, Ehlers-Danlos, Dystrophia mesodermalis congenita, EDS, Ehler Danlos Syndrome, Ehlers Danlos Disease.