Which are signs of a mild allergic reaction?

• A. Shortness of breath and wheezing.
• B. Hypotension.
• C. Anaphylaxis.
• D. Itching and hives.

Answer: (D)

Itching and hives arise from the skin’s reaction to an allergen and are typical signs of a mild allergic response. They reflect localized histamine release in the skin, causing itchiness and red, raised welts without involving the airways or the cardiovascular system. Signs like shortness of breath and wheezing indicate airway involvement, which points to a more serious reaction beyond the skin. Hypotension shows systemic involvement and can progress to shock, a hallmark of a severe reaction. Anaphylaxis is the most severe form, with multiple body systems affected and requires urgent emergency treatment. So itching and hives fit as mild allergy signs, while the other symptoms suggest a stronger, potentially life-threatening reaction.