So our little ones (Timmy and Eli) developed an upper respiratory infection in their windpipe. They are getting injections. Timmy no problem. Eli not so much. We give him the injection and in about 5min he start to swing his head and cry and fall over and the crawl on his honches. Then does this thing that looks like he is having a seizure. They first time this happened I scooped him up and brought him to the vet. By the time we got there he was standing and just looking around as if nothing was wrong. The vet just giggled at me. This time I was repaired for the reaction. Again he did the same. This time I just held him as he gave kisses and cried. After about 20min of him in my lap he just stood up and was ready to go outside. Any idea of what causes this? Is he just a baby freaking out or is it the reaction to the medication going through his system?