What is considered the first line of treatment for anaphylaxis?

Administering adrenaline intramuscularly is recognized as the first-line treatment for anaphylaxis due to its rapid action in counteracting severe allergic reactions. Adrenaline works by causing vasoconstriction, which reduces swelling and increases blood pressure, as well as bronchodilation, which helps alleviate respiratory distress. This quick onset of action makes it particularly effective in reversing the life-threatening symptoms associated with anaphylaxis.

Other treatments, while they may play a role in managing allergic reactions, do not address the critical aspects of anaphylaxis as promptly or effectively as adrenaline. For instance, antihistamines can help relieve mild symptoms but are not sufficient for the severe symptoms of anaphylaxis and work too slowly to be effective in an acute situation. Similarly, applying ice or performing CPR are not appropriate interventions for anaphylaxis specifically and do not target the underlying physiological issues caused by the allergic reaction itself.