Which of the following is a recommended action for an allergic reaction?

Applying hydrocortisone cream to the affected area is a recommended action for an allergic reaction, particularly when it involves localized symptoms such as rashes, itching, or swelling. Hydrocortisone cream is a topical corticosteroid that helps reduce inflammation, alleviate itching, and provide relief from discomfort in allergic reactions on the skin. By applying this cream, you can effectively manage the symptoms and prevent the allergic response from worsening.

In cases of more severe allergic reactions, such as anaphylaxis, other interventions may be necessary, but for mild to moderate reactions, topical treatments can be very effective. It is crucial to ensure that the reaction is suitable for such treatment, hence why it's essential to check the symptoms rather than administrate medication indiscriminately.