My 4 1/2 year old son took his 5th dose today b/c of an ear infet...

My 4 1/2 year old son took his 5th dose today b/c of an ear infetion and almost immediately broke out in severe hives and rashes all over his back and stomach. Went to the Dr. after giving him Benadryl and they said it could either be a viral infection or maybe a reaction to the medicine. They said since his ear was better to stop the medicine. Six hours later, he broke out in severe hives and rashes again this time all over his legs, face and shoulders. My poor son cant stop itching himself. His behavior has also been way off, cranky, irritable and extremely moody. After reading this site, I will never allow any of my kids to take this medication. thanks.