Eczema? Allergy? Something else?

We find out tomorrow.  Emory's annual check up isn't scheduled until next month but we made an appointment with his pediatrician.   Fingers crossed we get this figured out.

As you can see Emory's eczema/allergy has become worse.  Thank goodness it's not this bad all the time; this photo was taken the night after a day at the park in shorts. A grass allergy?  Perhaps, but I still feel eczema is somewhat to blame as the splotches often appear scaly and feel dry.  I  hope Doc can figure this out and prescribe something that will provide fast relief for Emory.  I'll update as soon as I know more.