Inclusion Criteria:  Patient with haemophilia of any severity, Carrier female with low levels haemophilia (< 40%), ≥ 18 years of age and capable of giving informed consent to participate in research.  Exclusion Criteria:  Patient's refusal to participate in the survey, Patient does not understand enough French (written and spoken) to complete the survey, Patient unable to complete the survey for logistical reasons (lack of internet access), Patient under protective measures (guardianship), Patients with known addictive comorbidities and/or cognitive disorders.