Try looking at the pattern of the hives. If it is contact related, it will be where the contact occured (e.g. where the affected clothes touched). If it is systemic, it will be everywhere, even in the scalp.
My brother-in-law had hives due to a change in his usual laundry detergent and it affected him where his clothes touched him (but not where his underwear was ). The manufacturer made a change so the BIL had no idea this would happen. The first time I ever gave my daughter liquid motrin, she broke out head to toe (including her scalp). I gave her benedryl immediately and we drove to the ER. We do not know if it was the motrin or the dye.
Since the med is out of her system w/in hours after the patch is removed, I would have to agree with the doctors opinions. The fact that the hives came days after the last wearing of the patch leads me to believe that.
My son, who is not usually allergic to anything (except ragweed) broke out in hives one time due to the laundry detergent changing formulas slightly...he hasn't had a problem before that day 8 -9 years ago, nor has he since....but that day he was covered EVERYWHERE except his underwear area (I hadn't done a load of whites yet thatnk goodness). Once I took all of the clothes out of his drawers and rinsed them thoroughly, and gave him a dose of benadryl, he was fine.
I think that it is all too easy to attribute every little thing that changes in our child to the new med, but in this case, since it had been out of her system well over 24 hours, I would say it is quite unlikely...just my opinion....
My 9 year old started Daytrana last Wednesday. Wore the patch on Wed, Thurs, Friday. Did not wear it on Saturday or Sunday. Sunday night she was covered in hives - but, there are none near her hips where she wore the patch.
I am guessing it was something all together different - timing just happened to be the same week we started the patch. I am awaiting word from her teacher as to how he feels it is working at school. Wanted to pass that along in case it is helpful to anyone else...My daughter and son both tried the Daytrana patch and both of them broke out where the patch was. The patch is wonderful but i do think it's a little big. They never broke out in hives all over, just where the patch was. I even tried putting it on my daughter's arm to see if it made a difference and it didn't. Good luck!!