ICC lists short term memory problems as a common symptom of ME, but apart from those, I seem to have also long-term memory problems, which I have not seen mentioned anywhere. Examples: I cannot recall people's birthdays, years when things happened, or sometimes actual events that other people who also partook seem to recall perfectly. I see two possible explanations for this. Either the recording mechanism has a problem, or the recall mechanism has a problem. Of course, it can also be a combination of both. By recording mechanism here I mean, at that distant time in the past when the even took place, due to ME it was not recorded properly. By recall mechanism I mean, now, in the present, ME is preventing the thing from being remembered. Or it could be just an effect of PEM/brain fog, which makes it generally hard to think.