Ehlers-Danlos syndrome, hypermobility type (MONDO_0007523) (HT-EDS) is the most frequent form of EDS, a group of hereditary connective tissue diseases, and is characterized by joint hyperlaxity, mild skin hyperextensibility, tissue fragility and extra-musculoskeletal manifestations. Also known as: EDS III, EDSHMB, Ehlers-Danlos syndrome type 3, Ehlers-Danlos syndrome type 3 (formerly), Ehlers-Danlos syndrome, hypermobile type, Ehlers-Danlos syndrome, type 3, Ehlers-Danlos syndrome, type III, HT-EDS.