Injuries that gets permanent and causes permanent pain will now get less painful over time. Pawns learn to cope with it and will feel less pain as time goes by.
After five days pain is reduced to 75%
After a quandrum the pain is reduced to 50%
After a year the pain is reduced further to 25%
Mod-settings
When the three changes occur
What pain levels they should give
Making pain worse in rain/snow (+100%)
Making pain worse in lower than seasonal average temperature (+100%)
Making pain worse after waking up (+100% and falling with rest-level)