memory loss -what all are the common causes

Causes of Persistent Recent Memory Loss

Korsakoff syndrome
Sequelae of head Injury
Sequelae of cardiac arrest
Sequelae of anterior cerebral artery aneurysm rupture
Cerebral infarction in:
-hippocampal formations
-medial thalamic regions
Herpes simplex encephalitis
Structural lesions of hypothalamic-mammillary body region
-tumors
-granulomatous disease
Dementias:
Alzheimer disease
vascular dementia
dementia with Lewy Bodies
fronto-temporal dementias
Huntington disease