Inclusion Criteria:  Constitutional Von Willebrand Disease patient, of any severity, with or without Von Willebrand Factors inhibitors Patient included in the research database BERHLINGO Patient treated or not by desmopressin or Von Willebrand Factor/FVIII/by-passing agents available on the French market (at baseline) Patient who agrees to participate in the HOPSCOTcH-Will II and followed in one of the 5 investigator centers  Exclusion Criteria:  - Patients under guardianship