Erythema multiforme

Anyone else’s baby been diagnosed with this?

Mom rant: I am so thankful that my baby is in general healthy but I feel like he can’t catch a break. Ear infection after ear infection so went to the ENT yesterday and they scheduled for him tubes. Both ears looked terrible during the pressure test. He’s only 11 months. Then lastnight he broke out in a hives and I gave him Benadryl and it’s worse this morning. Pediatrician said it’s from a charged up immune system from being sick. I just want him to feel better and get relief from his ear infections. Also, did I mention we have a little brother coming in 6-7 weeks.