RT Journal Article SR Electronic T1 Acquired haemophilia A in a patient who is a Jehovah’s Witness JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e244928 DO 10.1136/bcr-2021-244928 VO 15 IS 8 A1 Brown, Clare A1 Page, Andrew YR 2022 UL http://casereports.bmj.com/content/15/8/e244928.abstract AB We detail the case of a man in his 80s who was a Jehovah’s Witness, presenting to hospital for the second time in 1 week with atraumatic, severe bruising affecting his right thigh and flank. He was subsequently diagnosed with idiopathic acquired haemophilia A (AHA) and was urgently treated with recombinant factor concentrate and immunosuppressive therapy. Management of his bleeding disorder and resultant severe anaemia was adapted in line with his religious beliefs. AHA is a rare bleeding disorder which should be considered in patients with an isolated prolonged activated partial thromboplastin time and a history of recent or acute bleeding. Prompt diagnosis and management are essential as delays may result in increased mortality. Given that this patient declined blood transfusion, management of his bleeding disorder presented a unique challenge.