As a long time sufferer of this terrible condition, who have tried everything.
This makes prefect sense and it is one of the most rational thing I have seen on this board.
I actually thought this may be this condition was caused by the backside opening not closed properly somewhere but then I quickly dismissed it as another wild idea of mine.
I am going to talk to a doctor about this and will come back to this board and give you an update.
I wish you all the best and may this cure your condition.