Never, ever give him ibuprofen again!! It sounds like he does have an allergic response to ibuprofen and a dangerous one at that. Anytime you get swelling in the face, especially around the mouth, there is a danger of swelling in his airway which can be fatal. I'm allergic to penicillin and sulfa. Dentist prescribed Clindamycin 150 mg for 10 days for infection in my tooth. Got hives, rash, swollen lips and extreme itching and blotches from head to toe. A Dental MythBuster addressing the fabled epinephrine allergy. Learn why you can't be allergic to it and why dentists use epinephrine for fillings, crowns, etc. You’ve probably heard that when kids take antibiotics, they may experience side effects like diarrhea. But some antibiotics, such as amoxicillin, can lead to a rash. Amoxicillin Rash is the presence of red or white swellings on the skin as a reaction to the intake of amoxicillin drugs, which are used to treat bacterial infections such as pneumonia, urinary tract infections and bronchitis. Causes of an ampicillin or amoxicillin rash Hives. Hives are usually part of an allergic reaction. They may be part of a more serious type of allergic reaction (anaphylactic reaction). For Allergic Reactions: I had a chronic cough for 5 months. Tried nose drops - didn't help. Lung x-ray was clean. Tried losec for GERD (Gastroesophageal reflux disease). I had an allergic reaction to Pravastatin and broke out in itching everywhere on my body. Between my legs, arms fingers face , Itook a benadryl immediately, and then as the itching kept spreading everywhere I could not remember if I had taken the pill, I did not have the box to look at so I took another one. WARNING: You`ve selected a custom quantity of. This means you only want dispensed. Are you sure you only want to order ? If you need assistance, let one of our customer service representatives help you: 1-800-748-7001. Read about allergic reaction testing, symptoms, causes, treatment, and prevention. Allergy symptoms and signs include swelling, hives, and rashes. Severe allergic reactions may cause anaphylaxis. Learn about allergy medicine.