What is the recommended action for caring for a conscious casualty with a severe allergic reaction?

In the case of a severe allergic reaction, often referred to as anaphylaxis, administering antihistamines can be an appropriate response. Antihistamines are designed to counteract the effects of histamine release during an allergic reaction, helping to alleviate symptoms like hives, swelling, and itching. However, it's critical to note that while antihistamines can assist in managing mild to moderate allergic reactions, they may not be sufficient as a first-line treatment for severe reactions.

In situations of anaphylaxis, especially where there is difficulty breathing or swelling of the throat, the immediate administration of epinephrine via an auto-injector is the preferred action. If a person is conscious and able to swallow, and if you are certain that the reaction is not life-threatening at that moment, non-emergency antihistamines can be provided. Therefore, the action of administering antihistamines, while useful under certain circumstances, must be combined with other emergency responses including calling for medical assistance and potentially using an epinephrine auto-injector if available.

Other options such as monitoring oxygen levels or applying a cold compress do not counteract the underlying allergic reaction and are not suitable responses. Similarly, initiating CPR is reserved for cases where the casualty has lost consciousness