Amnesia
Amnesia is a condition characterized by a partial or complete loss of the ability to recall past events or learn new information. This phenomenon can result from various circumstances, including head injuries, brain disorders, severe stress, or psychological trauma.
There are two main types of amnesia: retrograde and anterograde. Retrograde amnesia refers to the loss of access to memories formed before a particular event, such as a blow to the head. Anterograde amnesia involves difficulty forming new memories after the event.
Amnesia may result from physical changes in the brain caused by injuries, illnesses, exposure to toxic substances, or medications. Psychogenic amnesia may also occur in response to extreme psychological stress or trauma.