CHST3 and Ehlers-Danlos syndrome: The current study is a retrospective analysis of individuals assessed at the GoodHope EDS Clinic and aims to describe rates of mental health concerns and identify whether mental health concerns differ by diagnostic group; non-hypermobile EDS, hEDS, G-HSD, or not diagnosed with EDS/G-HSD (i.e. no signs of hypermobility or collagen dysfunction).