Differential Diagnosis of Amnesia 

Amnesia 

Amnesia can be divided into acute cases of amnesia and chronic cases of amnesia.

The differential diagnosis of acute (transient) amnesia / causes of acute amnesia may include :

-migraine
-traumatic head injury
-temporal lobe epilepsy
-transient ischemic attack
-tumors

The differential diagnosis of chronic (persistent) amnesia / causes of chronic amnesia may include :

-bilateral posterior cerebral artery occlusion
-bilateral medial temporal lobe lesions
-tumor of the midline in the region of the third ventricle
-herpes simplex encephalitis infection 
-sarcoidosis
-limbic encephalitis
-thiamine deficiency
-Korsakoff’s psychosis in alcoholism
-cognitive defect