I am off to hit the hay shortly, so will give a clue. Theo or Yorkie should know and anyone who teaches English might.![]()
Something to do with writing then...and since it sounds as though the derivation relates to a persistent unpleasant condition, I'd guess it was either an obsessive compulsion to write or some kind of unsatisfactory writing. Actually I've no idea but, for someone like me who loves words, you've no idea how hard it is to resist looking it up. If the answer's not here in the morning I'll be reaching for several dictionaries