What should you do for a casualty with a suspected allergic reaction?

In the case of a casualty with a suspected allergic reaction, administering antihistamines is the most appropriate action. Antihistamines work by blocking the effects of histamine, a chemical released during an allergic reaction that can cause symptoms such as itching, swelling, and hives. If the reaction is more severe, antihistamines can help alleviate initial symptoms while waiting for medical professionals to arrive or for further treatment.

This response is particularly important in scenarios where the allergic reaction could escalate, such as in the case of anaphylaxis. In these instances, antihistamines can be a critical part of first aid until more advanced medical help is available.

While providing water can help hydration, it does not address the underlying allergic reaction. Home remedies typically lack the efficacy and scientific backing to treat allergy symptoms effectively and can sometimes lead to delays in proper care. Ignoring the symptoms can be exceedingly dangerous, as allergic reactions can progress rapidly and may lead to severe complications.