catatonia and akinetic mutism: an unusual presentation of cerebral vein thrombosis; case report of two patients

Aims: cerebral venous thrombosis (cvt) is an uncommon neurological condition responsible for 0.5 to 1% of strokes occurring among the adult population. cvt diagnosis is challenging due to its wide range of risk factors and clinical presentations. in this paper, we aimed to introduce two cases with psychiatric presentations of the cvt, which has been so misleading for the physicians up to now and led to delayed diagnosis.method: in the current study, one patient with catatonia and the other with akinetic mutism simulating catatonia were discussed based on their mechanisms and mri findings.findings: the patients were reffered with dysfunction in speech, the decreased motions, and other symptoms related to specific psychiatric disorders. in case 1, mri findings demonstrated a hyperintensity in the left thalamus and thrombosis in the left jugular vein, sigmoid sinus, and transverse sinusfinally, and in case 2,  there was thrombosis in her strait sinus. therefore, anticoagulants wsa prescribed, and the complications improved, except for short memory loss.conclusion: catatonia and akinetic mutism are associated with various psychiatric and medical conditions that can be misdiagnosed if we did not consider these disorders.