Final answer:
The priority treatment for anaphylaxis is to administer epinephrine immediately, which is critical in managing severe allergic reactions and can be life-saving.
Step-by-step explanation:
The priority treatment for anaphylaxis is to administer epinephrine as soon as possible. Epinephrine works to counteract the effects of severe allergic reactions by constricting blood vessels to increase blood pressure, relaxing smooth muscles in the lungs to improve breathing, and reducing swelling that may block airways. People who are at risk of anaphylaxis often carry an epinephrine autoinjector for immediate use. After the initial treatment with epinephrine, follow-up treatment may include administering antihistamines and corticosteroids, but these are not the primary treatments for an acute anaphylactic reaction.