Sinusitis
"I have chronic sinusitis and was prescribed cefdinir. I had no known allergies to antibiotics (and have been on MANY over the years) Two days into treatment I woke with my face swollen and covered in hives. My throat began swelling and I was rushed to the ER. After two Epi shots and IV epinephrine, I spent 5 days in intensive care with anaphylaxis and the worst case of hives I have ever experienced. It was, by far, the most agonizing pain I&#039;ve endured. It took months to go away with steroids, antibiotics and prescription antihistamines. It have permanent scarring on my body as a result of the hives. I&#039;m now allergic to all cephalosporins."