My 2yr old son finished his second round of Omnicef in 6 weeks. first was due to strep throat and second a sinus infection. Day after the last dose, he started to get the rash he got with Amoxicillian, and a low fever. Next he started sticking his lower jaw out and gritting his teeth, then he started these rapid, very pronounced eye blinks or twitches. Next he started jerking his head in one direction. Pediactrician saw this and told us to go to the er. They said probably 2 issues... Viral infection and maybe developing ticks (SP?). We are to follow up with neurology. I think they are full of crap. Could the neuro symptons be a reaction to the omnicef???