Eczema Treatment Care

The rash is only behind her knees, nowhere else. It isn’t a recent thing either, I noticed it a few months ago and I have been putting Eucerin Cream on it since it was very dry. It has never seemed to bother her, but it’s starting to bother me now. I was wondering if this could be Eczema and if so, do I just let it be, do I keep putting cream on it, or should I see if something can be prescribed for it?

Thank You.

I have tries cocoa butter, tissue oil and a few creams that promise to even out skin tone and lighten marks but to no avail. Can anyone give me names of products to use, note that i have very sensistive eczema prone skin and react to most products.