Yesterday I was at work and I work at the register usually and there was a regular who comes all the time, I know this persons name and always go "hey john how you doing" but for the life of me, I couldn't remember his name when he first came to the register, I knew him, and I kept going through J names in my head like jake, jared, etc...till I was like ...OH JOHN! (duh). Today I also was trying to explain something to someone about Leonardo DiCaprio and I forgot his name for a minute or two then it registered.

Is this some form of dementia or is this exact sort of situation rather common. I am 29 years old and as far as I know, don't have any family history of dementia.

Does anyone ever experience this??