My 6 year old daughter is having severe joint pain in several spots and redness/swelling around her joints. She is unable to grasp a pencil and is unable to walk due to the pain. This is almost identical to what happened to her almost two years ago, so I took her to the doctor and we just got home. We learned that two years ago my daughter had finished her 10 days of Omnicef just a few days before these symptoms showed up. Coincidentally, my daughter finished Omnicef two days ago for a sinus infection and her current symptoms showed up yesterday. These are the only two times in her life that she has taken Omnicef and unfortunately no one (including myself) ever made the connection that Omnicef might have been the reason for the reaction two years ago. After reading some of the other stories here and many blood tests and doctors visits later with still no answer for the symptoms, I feel very strongly that it is more than a coincidence that Omnicef is the cause of my daughter's pain. Two years ago she had the hives as well and all the symptoms lasted about 10 days. We are only in day 2 now and giving Motrin for the pain, but no hives yet this time. I will not allow Omnicef again for my kids - way too scary to see the amount of pain a drug reaction can cause.