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Is there a milder type of eczema? - eczema pictures ring

My sister has always been the kind of person that bite), but usually these dry areas in the joints (such as bending the elbow and knee. I saw pictures of eczema, arms and legs do not seem as bad as it has done. The places where the weapons are not really that red stripe starts less seriously and bleed a little. And only a small area on the arm or leg, not everywhere.
I'm not sure what it is. I thought some might milder forms of eczema?