Here we report the case of a patient who presented with acute cardiac tampo
nade due to drug-induced systemic lupus erythematosus (SLE). The patient ha
d been treated for a seizure disorder with carbamazepine, a chug that has p
reviously been demonstrated to cause SLE-like syndromes, Further serologic
anal, sis demonstrated the likelihood of drug-induced SLE in this patient,
with the rare presentation of cardiac tamponade.