Eczema behind my child's ears - is she stressed?

My son had eczema for the first 3 years of his life. His was not stress related and eventually went away, but did require a RX...it was pretty severe. BUT, I know an adult who has SEVERE eczema and she said it flares up during stressful times...I've seen hers and it's really does. SO, i guess it just depends on the person. BUT, dry skin behind the ears is not uncommon. both my kids tend to be dry there.