For comparison, RMU says for this list, "The spells on this list should be treated as curses with mental effects." And then the referenced section says "Mental illness due to spells on the Mind Disease and Mind Subversion lists and a few other places may be removed by Mind Disease Cures, Uncurse, or Purge Curse."
More generally (about curses and diseases) it adds "Alternatively, certain diseases may be “healed” by using a healing spell or medical treatment." You could consider these a type of injury to the brain, in which case spells that heal Nerves should apply, you just have to decide the effective severity. But that's a decision about the mechanism. Is the brain physically injured, is there a dark entity whispering in their ear, is there corruption of their spirit or aura, etc? Even in real life we do a poor job of comprehending what is an impairment of the brain itself, what is psychological, and what is both (most things), and that gets even harder to sort out when you add magic to the mix. But you can also think about how easy or hard you want those conditions to be to remove.
