Clinical Research Directory

Inclusion Criteria: * Patient with Rendu-Osler disease with an indication of antiplatelet and/or anticoagulant introduced for less than 3 months (inclusion period within 3 months of exposure) * Age \> 18 years old * Patient able to understand and agree to participate in the study * Affiliation to a social security system Exclusion Criteria: * Patient with an indication of antiplatelet and/or anticoagulant but for whom treatment has not been introduced or introduced for more than 3 months * Refusal to participate * Pregnant woman or who are breast feeding * Patients under maintenance of justice, wardship or legal guardianship