The role of perceived social support for outcomes for the long-term health condition hypermobile Ehlers-Danlos syndrome.

Social connection is a key health determinant yet remains under-researched in long-term conditions marked by isolation such as hypermobile Ehlers-Danlos Syndrome (hEDS). Individuals with hEDS are especially vulnerable due to the condition's complex and often misunderstood symptoms. This study presents the first high-powered quantitative investigation (n = 401) of perceived social support and companionship in hEDS. Using validated, theory-informed measures, we examined whether loneliness, support from family and friends, and dog guardianship predicted physical, mental, and social wellbeing outcomes. Loneliness was the most robust and consistent predictor, linked to poorer outcomes. Support from friends predicted some wellbeing indicators, whereas family support and dog guardianship had minimal predictive value. These findings have practical implications: interventions targeting loneliness and peer connection may be more effective than generalised or pet-based support. This research offers a novel contribution to understanding social determinants in chronic, stigmatised conditions, with relevance for intervention design and health policy.