Symptoms of an allergic reaction to amoxicillin, a member of penicillin
, may include anaphylaxis, hives, below-the-skin swelling, or asthma symptoms. Skin testing is the best method for diagnosing a penicillin allergy. If found to be allergic, the main treatment is avoidance of future use of amoxicillin and related antibiotics. Other groups of antibiotics with the same efficacy, may be used to treat the infection.