She (dd-age 4) first developed it three days ago but then it went away with a little hydrocortisone. Then, she woke up this morning and her face was swollen. I gave her a small dose of Benadryl and it went away again. Now it is back with a vengeance. Just gave her some more Benadryl but don't want to use any more medication. We just moved to a new house a few weeks ago so there are tons of potential new allergens. Any suggestions on how to figure out the cause and/or treat this holisitically????