<prompt> The most common cause of Addisons disease is:--Autoimmune adrenalitisMeningococcal septicemiaMalignancyTuberculosis  <response>: Ans. is a Autoimmune adrenalitis In early series, tuberculosis was responsible for 70 to 90 of cases, but the most frequent cause now is idiopathic atrophy, and an autoimmune mechanism is probably responsible. - Harrison, 15e, P 2098Remember MC cause of Addisons ds - Autoimmune adrenalitisMC cause of Addisons ds in India - TB API, 6e, p 972 