Final answer:
Immediate administration of epinephrine is critical in managing a child with a severe allergic attack and hypotension due to anaphylaxis. An epinephrine autoinjector can provide life-saving medication before emergency medical treatment is available.
Step-by-step explanation:
The appropriate management for a child with severe allergy attack showing signs of hypotension is an immediate administration of epinephrine. This medication is the first-line treatment for anaphylaxis, a severe systemic allergic reaction that can cause life-threatening symptoms such as respiratory distress, tremendous swelling of the throat, and a dangerous drop in blood pressure. Individuals with known severe allergies are often equipped with a self-injecting epinephrine autoinjector, such as an EpiPen®, to administer the medication in emergencies.
Following the epinephrine injection, the patient should seek emergency medical help because the reaction may recur. Medical professionals may provide additional treatments, such as antihistamines and slow-acting corticosteroids, to prevent further or delayed allergic responses. Treating anaphylaxis promptly with epinephrine can save the child's life by countering the blood pressure drop, relaxing bronchial smooth muscle, and averting a complete airway obstruction.