Susan:
Hard to say, of course. Questions:
1. Has a culture ever been done for bacteria or fungus? If not, I would suggest them.
2. How long did you use Embeline for? By "doesn't seem to help," do you mean that regualr twice-daily use for 7 days does nothing, or that the rash gets better and then comes back? If the latter, eczema is indeed likely.
As near as I can guess from your description, I think eczema is more likely than infection. If so, you may need to scale down your expectations, from cure to control.
I recommend another full and frank evaluation by and disucssion with your dermatologist, or another opinion.
Best.
Dr. Rockoff