hi Rockysmom - Eczema is a tricky one... my daughter (who almost 20) has had it since she was about 6 years old. It was so bad, the school nurse thought it was chicken pox. The doctors were stumped too, as it was all over her body. We have two dogs but it has no bearing on her breakouts. We have found very humid weather is a problem, as is dry weather. The more she scratches the worse the rash becomes. We have used steroid creams and had allergy tests. She's allergic to grass, mites, and other things that you just can't avoid in life. We were told that if you have anyone in the family with asthma the chances of your son having eczema increases - it may be from the dogs, it may not. All my friends who have dog allergies manifest as itchy eyes and sneezing, more like hayfever. So the eczema reaction may be a coincidence and have nothing really to do with the pup even though he's testing positive for it. My daughter actually has not had severe rashes for a while, up until about 3-4 weeks ago. Maybe it's the weather. Good luck