Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.
I think your doctor may be right.
There is a possibility that there is
attention deficit disorder, or ADD. If a person is not paying attention to the job at hand, obviously they would draw a blank about the activity when they are asked about the activity. Without paying attention to what you are doing, a memory cannot form. The onset may be related to other issues like his divorce and work pressures etc. The
depression might be a significant reason for this.
However, from the message, it seems that these episodes of
memory loss have come in suddenly. I would really recommend doing an
MRI of the brain to rule out an organic cause of the illness. If this has already been done, and the MRI is normal, I would recommend trusting your
neurologist.
I hope that helps. Feel free to contact me for any further details.