AHHHHHH - BP continues to progress in severity whether or not the afflicted is undergoing treatment. Treatment only mitigates the illness as long as the regimen is properly followed - BUT IT DOES NOT STOP OR IMPEDE THE PROGRESS.

Think of it like this; an alcoholic may quit drinking for years, but as soon as he/she picks up the bottle again, their progression starts as if they had never quit drinking - and not back to when they took their last drink.