We saw the paediatric dermatologist again today and we've come away with antibiotic liquid, fucidin H and dermol to put in the bath. The ezcema on his cheeks is still infected despite a week on fucidin so hopefully the new meds will help it heal. She said don't be afraid to use HC creams for 3 months if you have to, and not to stop after a week if it's not completely cleared up. I'd heard it was bad to use too much steroid cream for too long but I guess I'll take her word for it.
They took a scrape of the skin on his cheeks and a swab to test for bacteria. Then he had a blood test and they are going to check for the most common allergens (milk, soy, nuts, wheat, egg) and dust mites. Results will be back in 4-6 weeks. She seemed to think the blood test results would be pretty conclusive but I know some of you have not had much luck with blood tests so who knows...