Memory loss, bewilderment and general disorientation following on from drinking vast quantities of alcohol. Sufferers have no concept of anything - a general sign of having too much booze.
More hardened sufferers keep the symptoms whilst being sober. Similar to mumnesia, only the cause is being a drunken twat.
A.K.A. Alcoholic Dementia
Woman: Did you call the carpet fitters?
Man: Ah shit... I forgot, my Alczheimers must be getting worse.