What is the general treatment for an allergic reaction?

The general treatment for an allergic reaction involves removing the foreign substance that triggered the reaction and administering antihistamines. This is important because antihistamines work by blocking the action of histamine, a substance in the body that causes allergy symptoms. If the allergen, such as pollen, food, or a medication, is not removed or avoided, the body continues to react to it, which can lead to worsening symptoms.

In some cases, if the reaction is more severe, additional treatments, such as corticosteroids, may be necessary to reduce inflammation. However, these alone do not address the immediate symptoms of an allergic reaction and are not the first line of treatment. Therefore, removing the cause of the allergic reaction and using antihistamines is the most effective and generally recommended approach for managing allergic reactions in a wilderness first aid context.

Waiting for the reaction to resolve without intervention is risky, as allergic reactions can escalate, especially in cases of anaphylaxis. Using ice packs and providing fluids can help in other contexts, such as for swelling or heat-related illnesses, but they do not address the underlying issue of an allergic response. Thus, the focus on the removal of the allergen and the administration of antihistamines makes this the correct answer.