Answer:
He is suffering of Transient global amnesia , anterograde and retrograde amnesia.
Explanation:
Transient global amnesia is sudden and temporary loss in the memory. As the people having this problem can not store the new memories and it can not be related with any common neurological problems.
anterograde amnesia is the loss of patient ability to create new memories after the event due to which amnesia occurs which will result in complete inability to recall the recent past event and memories.
Retrograde amnesia is the inability to recall past memories
