I installed MMM for the first time to go along with restarting the game, and it's been pretty fun, but I encountered a problem that I think is in relation to this mod. I was in the ruins of Sancre Tor and was attacked by the Ghostly Apparition--the pale wraith that screeches and touches the player, causing them to collapse and drain fatigue. However, after getting hit by this, I noticed my fatigue was not refilling all the way, it would only refill about 4/5 of the way. I got hit with another Ghostly Apparition and then my fatigue would only refill 3/4 of the way. I just figured this was some type of Damage effect similar to Damage Attribute, except for fatigue. I went to a chapel and got the blessing that removes things like that, but my fatigue still won't refill all the way.
I have no idea why this happened or how to fix it. Restore Fatigue potions don't work either.
Sounds like you're using an old version of MMM as this was a bug in older versions IIRC. So, which version are you running? Update to http://www.gamesas.com/index.php?/topic/1165282-relz-martsmonstermod37b3-public-release-3-relz/ if you aren't using it already - but note the note in the opening post. Meanwhile, I think Stat Restore will fix the issue. You get with the Unofficial Patch if using it - otherwise it's a standalone release as well.
EDIT: Yes, it was fixed way back in http://pages.suddenlink.net/corepc/#_=====_VERSION_HISTORY_=====:
- Fixed Ghostly Apparition fatigue bug.
So seems you have an old MMM version and should update.