finding the cause or causes of hives is very clinically difficult. there are no tests that would conclusively determine the specific cause. you can due hundreds of tests and perhaps get a few things that show up positive but that does not prove this is the specific cause. there are no tests for "rare causes" unfortunately. of course you and her mother are frustated. who wouldn't be? frustration does not make it any easier in finding a cause so the next best thing to do is just treat her for hives with something that works. and something that she can take every day.
whats the next step in determining cause of my 6 yr old hives? how do i get dr to test for the"rare" causes. my 6 yr old granddaughter has had recurrent hives most of her life. with illness or new medications. recently did allergy testing found nothing. did trail with amoxocillin with no hives. treated hives with prednisone. had another outbreak last week this time included swelling of hands and feet. benadryl works. mom wont take her to dr frustrated with lack of answers or treatment.