Forgetting Myself

[Son of Dave]

I am trying to stat up a character who suffers from bouts of amnesia associated with some of their other mental disadvantages (notably beserk).

Initially Amnesia (Selective) [-5] from Space seems to cover it, but Selective Amnesia refers to memories that have been wiped not which are currently-and-for-the-forseeable-future being wiped.

I found a solution in running it as 'Temporary Disadvantage, Aftermath: Amnesia (Selective) -2%' further modified (in the same vein as Limited Enhancements B111) by 'Extended Duration, Permament +150%' for a grand total of -5% (or +5% when applied to a disadvantage like Beserk). So that after an ability is used or a disadvantage triggered, the character permamently forgets that period short of magic or advanced brain surgery. However this is neither legal nor particuarly fair, since consitently forgetting the things you have done seems quite dangerous and deeply confusing.

Is there a RAW way of replicating what I have been hashing out above?