<prompt> True about Dresslers syndrome is all, except :Occurs with in hours after myocardial infarctionRecurrence may be seenChest pain is commonResponds well to salicylates  <response>: Answer is A Occurs with in hours after myocardial infarction Dresslers syndrome develops after an interval of 1 to 4 weeks or even month following cardiac injury MI and not within hours. Dresslers syndrome Post Cardiac Injury Syndrome Dresslers syndrome refers to an acute farm of pericarditis that develops after myocardial infarction The pericarditis typically develops I to 4 weeks following cardiac injuryMI but may appear after several months Recurrence may be seen sometimes upto 2 years or more after MI Injury Pathological pericarditis may be of the fibrinous variety The mechanism is not ceain but they are believed to result from a hypersensitivity reaction in which the antigen originates from the injured myocardial tissue. Circulating antibodies to myocardium occur frequently. The principal symptom is chest pain of acute pericarditis. Leukocvtosis, T ESR and ECG changes of acute Pericarditis may also occur. The pericarditis is usually resolves in I to 2 weeks and often no treatment is necessary apa from aspirin, NSAIDS or analgesics. Therepy with NSAIDS or coicosteroids is usually effective. 