honestly everything with our son was trial and error. avoid the big allergens, then try things carefully, and watch closely. check yourself for obvious vitamin deficiencies. add a good quality B multi vitamin, vit C and get some flax oil for you. if you have thyroid issues, you should certainly check out the Iodine supplementation forum too.
for a cream, we ordered online... google "earthworm herbals"... ask for one of the products that would help with the bacteria... these are all natural and home-made to avoid the allergens. excellent stuff.