T.P.
My son has mild excema - we cannot use any type of soap on him or he also gets the ringworm like patches like you describe. If he gets hot or has been outside in the heat they get worse and in the winter they seem to get worse. It's expensive but we use Cetaphil cleanser on his whole body, hair included, and the tub of Cetaphil moisturizer all over too. It really works. Have you tried switching to a "soapless soap" yet? We were also given a cream from the dr - can't remember the name of it - and we only use it when they get really bad. Check with a dermatologist to see if you're having some type of skin reaction to something. Your body can change after childbirth so no telling what is going on, especially if it has only been a year or two. I know my body didn't seem to get back to "normal" until about 2yrs after giving birth. Good Luck!!