Irritated labia 😰

Allie
If this is TMI - sorry not sorry -- 
One of my labia majora has been getting minorly irritated quite easily. Today though it's really bad...swollen, tender, red, itchy. 
I'm pretty sure it's from being a little sweaty down there and things rubbing/chafing 🙈
Any advice how to avoid this & how to make it feel better??Â