G'day/Evening all.
Just joined up. been a follower of this forum since Skyrim was announced, but have played Morrowind and Oblivion. Started with Morrowind first in around 2006-2008 then Oblivion and now Skyrim, cannot wait for the Elder Scrolls VI in around 4-6 years. Now that the intro is out of the way, I have a slight problem with stamina. My stamina went down from 220 to 100 in red, i'm not a vampire and do not have any diseases and I noticed this when I joined the Companions (SPOILER - when I drunk Aela the Huntresse's werewolf blood from the bowl in the Underforge and turned into a werewolf at the start of The Silver Hand quest). I am wondering if this is a glitch/bug or just bad luck and is there any way to fix this (I finished the Companions quest by the way)? Thanks for any help.

Well if you definitely don't have any diseases perhaps it is a glitch from the Companions quest. Have you finished the quest?

Yes, I am now the Harbinger of the Companions.

Can you reproduce it by restarting at an older save file? If it is a glitch then it will likely disappear at a second play through. If it repeats then you can try to narrow it down.

Alternatively, try to get the next level-up, add some stamina and see if it disappears or if it stays.

I kind of deleted my older saves, (or else my saves get too clogged up) and I have leveled up and put some in stamina. Also, I have cured myself of Lycanthropy and my carry limit, interestingly, did not go down. Also I am level 38.

There are also display issues. I know it happens on skills. You skill will show up red and much lower than it should be. It seems to be a display problem rather than an actual reduction. Sometimes displays don't seem to update when you remove effects either by time or by effect.

Ok, well thats disapointing in a way, though, when I use Stamina it would show 50/100 or something. Thanks for the help everyone anyway. Also had a glitch with the purity quest, to cure Vilkas of Lycanthropy, where I would accept the quest, he would be a follower, then when going out a door (loading screen), he would walk back to Jorrvaska (spelling?). I did get him to follow me first to Ysgramas (spelling?) Tomb, then ask him, accepted, threw a Glemorils (spelling?) Witch head in the fire, defeated his wolf spirit, then I have 'Talk to Vilkas' in my journal, but when I do he does not say his thank you line which is supposed to end the quest but he says his random lines, so the quest never finishes. I gave up in the end and used the console command to end the quest, I just wish I didn't need to use the consle to finsh the quest, oh well (yet Farkas purity quest went without a glich/bug). Sorry for blabbering on, it is just that some gliches/bugs are really annoying, especially quest breaking gliches/bugs. Anyway, again Thank you.