What is released during an anaphylactic shock to counteract the reaction?

During an anaphylactic shock, the body experiences a severe and rapid allergic reaction, leading to symptoms such as difficulty breathing, swelling, and a drastic drop in blood pressure. In this critical situation, adrenaline, also known as epinephrine, is released as a key hormone and neurotransmitter to counteract the dangerous effects of the allergic response.

Adrenaline works by causing vasoconstriction, which helps to raise blood pressure, and by dilating airways to improve breathing. It also reduces swelling and hives that are associated with anaphylaxis. This quick action is crucial in stabilizing the individual and mitigating the shock.

While histamine is indeed released during an anaphylactic reaction and contributes to many of the symptoms, it does not help counteract the reaction itself. Oxygen can be supportive in treating respiratory distress but does not directly counteract anaphylaxis. Corticosteroids are often used in managing allergic reactions and inflammation over a longer time frame but do not act immediately, as adrenaline does.