I'm not sure what the correct name for this is but my family have been telling me i have these black outs a couple of times a day for about the last year. It's like an absence, like i'm not there. Most of the time i'm not aware of it happening at all but lately when i was at the dentist and i was waiting on him to write me a prescription and the next thing i know i he's telling me to go to the reception and i feel like i just woke up and i'm trying to comprehend what he's saying. I think he was repeating himself multiple times. Has anyone else experienced this because of M.E? I think it mostly happens when i'm very tired so maybe it could be something like lack of blood to the brain or something.