Which symptoms indicate a moderate allergic reaction?

• A. Wheezing, shortness of breath, and chest tightness.
• B. Hives with facial swelling only.
• C. Nausea and vomiting.
• D. Rash with itching only.

Answer: (A)

Breathing involvement is the key sign that separates a mild allergic reaction from a more significant one. Wheezing, shortness of breath, and chest tightness show that airways are being affected by the allergic response, meaning the reaction is not limited to the skin or stomach and can progress more quickly. This airway involvement is why these symptoms indicate a moderate reaction rather than a mild one.

The other descriptions reflect symptoms that are typically milder or localized. Hives with facial swelling can be concerning, but if there is no trouble breathing, they align more with a skin-dominant reaction. Nausea and vomiting and a rash with itching alone are common in mild allergic responses and don’t by themselves indicate airway compromise. If breathing difficulties occur, seek urgent medical care and use epinephrine if it’s prescribed for a known severe allergy.