The main aim of this study is to evaluate the effect of cross linking on the elasticity of skin samples from patients with non-vascular Ehlers-Danlos Syndrome (hEDS or cEDS).
Patient aged 18 or over, having read and signed the consent form for participation in the study
Patient with classic or hypermobile Ehlers-Danlos syndrome
Regularly followed-up at the non-vascular Ehlers-Danlos Syndrome Reference Center at Garches Hospital.
Patient under court protection, guardianship or curatorship
Pregnant or breast-feeding patient
Patient not affiliated to the French social security system
Impossibility of giving the subject informed information and/or written informed consent: dementia, psychosis, disturbed consciousness, non-French-speaking patient