The prognosis of stress induced cardiomyopathy (SCMP) is generally known to be excellent, however, several fatal complications such as cardiac rupture and left ventricular (LV) thrombosis with subsequent embolic complications have been described. We report a rare case of SCMP complicated by LV thrombosis and multiple cerebral infarctions in a patient with essential thrombocythemia. After intravenous anticoagulation with heparin and general managements for heart failure and cerebral infarctions, her neurologic symptoms and the wall motion abnormalities of the LV apex were improved, and the thrombus was disappeared on follow-up echocardiography.