Omnicef and welts

My 16 yr old son was prescribed this drug 9 days ago for a severe sinus infection. He came home from school yesterday with several small raised welts on the creases of his arms. I took him immediately back to his Dr who said he was having an allergic reaction, prescribed steroids and said it would get worse before it got better. Within a few hours his elbows had visible knots in different places, then his knees did the same thing, then his feet started getting knots on the bottom and he had different whelps breaking out on his torso and lower stomach. We immediately took him to the ER last night when he said his tongue "felt funny". The attending immediately diagnosed an acute severe allergic reaction and gave him a huge steroid and Benadryl dose. He released him because the itching had stopped and his tongue no longer felt funny. Last night he kept drenching himself with sweat during sleep. Today so far some of the whelps are gone but he has some pretty severe joint involvement with visible knots around the elbow and knees and feet.

My 27 month old son took Omnicef for 8 days for an ear infection. Good news: the infection cleared up...Bad news: He has welts all over his abdomen, as well as some on his ears, head, and legs. We returned to the doctor, and he said that it looked like an allergic reaction, but did not seem to tie it to the Omnicef. We went ahead and stopped administering it anyway. He reccommended Benydryl. Today I talked to the pharmacist, and she reccommended a Cortaid spray, that would help heal from the outside while the Benedryl helped with the reaction. After reading this site, I am worried that this could go on for weeks.

My 4 year old daughter has been on omnicef twice for an ear infection. After 8 days the second time she broke out in a rash all over her body. There were large welts and redness on her back stomach, legs, feet, and face. It is very itchy and comes up in one place and then goes away then comes up in other places. The doctor says this is an allergic reaction and could go on for 3 to 4 weeks. She prescribed orapred and recommended oral benadryl to counteract this reaction. The rash has improved but has not gone completely away.

My son is 23 months old and took Omnicef for 3 doses. He had severe red colored diariah, became quite irritable, had a fever of 104 about an hour after every dose, and had little welts all over his body along with a rash. I called he doctor, and both he and the nurse said they had never heard of any of these types of reactions, except for the diariah...obviously haven't listened to any one who has ever taken this terrible medicine!

My 6 year old son had a photosensitive reaction to Omnicef on his 10th and final day. That night it appeared as if he had gotten sunburned but he was also crying that his feet and palms were itchy. The next morning we could see welts on his trunk that moved to his arms and legs. The rash moved around and gradually improved over the next week. But now, three weeks later the welts/hives are back again and seem to be getting worse. They went from his trunk, to his arms and legs, and are now on his face, scalp, and ears, and his feet. Omnicef is not suppose to be photoreactive from what I have read, but this is the only thing that could have caused my son's reaction. My advice - do not take any antibiotic unless the condition is life threatening or will end in a loss of function.