Non-severe and severe allergic reactions

Non-severe and severe allergic reactions:

Non-severe symptoms include hives or pruritic (itchy) rashes.
Severe symptoms include anaphylaxis, angioedema, throat tightening, wheezing plus shock, airway compromise, or cardiovascular collapse. Cardiac collapse requires intervention (eg epinephrine, corticosteroids, vasopressors).

Note: Side effects such as vomiting, abdominal pain, and diarrhea are non-allergic.