What is an appropriate action for a child experiencing a severe allergic reaction?

For a child experiencing a severe allergic reaction, calling emergency services is the most appropriate action. This is because severe allergic reactions, also known as anaphylaxis, can escalate quickly and may become life-threatening. Immediate medical assistance is crucial to ensure that the child receives the necessary treatment, which may include epinephrine, oxygen, or other emergency interventions.

While administering an antihistamine might be recommended for milder allergic reactions, it is not sufficient for severe reactions. Encouraging deep breathing does not address the underlying issue and can lead to delays in obtaining necessary medical help. Providing food would not be appropriate, as it could worsen the allergic response. Therefore, contacting emergency services ensures that the child receives the critical care needed as quickly as possible.