Which allergic reaction causes wheezes, hives, stridor, and facial swelling?

• A. Anaphylaxis
• B. Asthma
• C. Bronchitis
• D. COPD

Answer: (A)

Anaphylaxis is a rapid, systemic allergic reaction where immune mediators released from mast cells and basophils cause both airway swelling and bronchoconstriction, as well as skin changes from urticaria. The wheezes come from bronchospasm in the lower airway, while stridor reflects swelling in the upper airway; facial swelling is angioedema, and hives are widespread urticaria. This combination of airway involvement plus skin findings signals a severe, life-threatening reaction that requires urgent treatment. Other conditions like asthma cause airway constriction but don’t typically produce facial swelling and generalized hives; bronchitis and COPD are infections or chronic diseases without this acute systemic allergic pattern.