What Causes Itchiness In The Labia Majora?

Hi, I've been experiencing an uncomfortable itch on both my left and right labia. They've also started to get inflamed, and is making it really difficult to walk. I also get a sort of whitish-yellowish discharge as well.
I've noticed that there seems to be some small cuts or so on my right labia, and sometimes when I can't help but scratch, it will bleed slightly or crack the cut open again.