I have two dry patches on the top of my left leg they are red but not itchy. Also a few dry roundish patches on my stomach. I have had eczema?

Need to see. It is a very difficult to diagnose most rashes without a visual aid. Can you attach a picture?
Nummular dermatitis? It is hard to say without taking a look. This may be a form of eczema, called nummular dermatitis, which usually presents as round, scaly patches. However, it may also be a number of other skin conditions, including pityriasis rosea, or simply dry skin, among others. See your health professional for a proper evaluation.