Hypothyroidism is a common disorder and when presenting with classical symp
toms and signs is easy to recognise. However, hypothyroidism may present in
a manner suggestive of an acute myocardial infarction with an elevated cre
atine kinase and electrocardiographic abnormalities. We report a case of se
vere hypothyroidism presenting as a cardiac event whose symptoms and signs
dispersed following treatment with thyroxine.