A lot of people suffer from itchy, swollen, red, and irritated skin because of stress problems. This can run the gamut of everything from Candida to Herpes or even Psoriasis. Our skin is a function of what we eat/drink, how well we sleep, and also whether we can calm down and stop stressing.
Dr. Eric Bakker is one of my favorites when it comes to understanding the connection between skin health and stress. Check out his example of how bad food and stress can aggravate the Herpes condition:
Catholics Aren't Zombies! 