Out of memory

Today I heard on my work that the neighbor of my colleagues has had over the weekend TGA.
We had never heard of TGA. From one moment to the other moment the memory of the neighbor was away. He could remember almost nothing and felt further pretty good actually. He didn't knew what day it was, what his children were called , what he was doing. How he came where he was. Nothing of that kind!
At the hospital it was found that he had no symptoms of stroke, heart attack or other crazy things. The neurologist suggested the diagnosis: TGA.

Transient global amnesia (TGA) is a syndrome in clinical neurology whose key defining characteristic is a temporary but almost total disruption of short-term memory with a range of problems accessing older memories. A person in a state of TGA exhibits no other signs of impaired cognitive functioning but recalls only the last few moments of consciousness plus deeply encoded facts of the individual's past, such as his or her own name. (Wikipedia).

A day hospital and he could go home. His memory was back, but the day before he was "Out of memory" and that day was gone as if he had not experienced it.