An oatmeal bath is an excellent natural treatment for eczema. Colloidal oatmeal baths — meaning that oats are dispersed in hot water, like Epson salt — are calming for inflamed, itchy skin. Aveeno offers a wide variety of colloidal products, but you could really make one at home by simply tossing rolled oats into the tub.  Add one or two cups of oatmeal to your lukewarm water and then get in. I would imagine those in extreme discomfort could add more. After getting out of the bath,  use lotion on your damp skin in order to seal the moisture.

Perhaps I’ve been watching too much of the Tudor’s, but I’m pretty sure this is exactly what a bath should look like.