Investigating Management, Perspectives and Attitudes Towards Care in Takayasu Arteritis

Inclusion Criteria: For the patient questionnaire: * Age ≥ 18 years * A formal diagnosis of TAK For the physician questionnaire • A physician involved in the management/decision-making for patients diagnosed with TAK Exclusion Criteria: For the patient questionnaire: * Age \< 18 years * Lack of a formal diagnosis of TAK * Patients without mental capacity or willingness to provide informed consent * Not UK based For the physician questionnaire * Not involved in the management/ decision making for patients diagnosed with TAK * Not willing to take part * Not UK based