Broken heart syndrome, also known as Takotsubo cardiomyopathy or stress-induced cardiomyopathy, is a condition where emotional or physical stress causes temporary weakening of the left ventricle. It affects about 1% of those experiencing a myocardial infarction and causes similar symptoms but is not caused by blocked arteries. Diagnosis involves EKG, echocardiogram, cardiac MRI and angiography showing normal arteries and left ventricular dysfunction. Treatment focuses on heart failure medicines and managing symptoms, and most patients fully recover heart function within weeks.