Which of the following is a common sign of anaphylaxis?

Which of the following is a common sign of anaphylaxis?

• A. Hives
• B. Cough with sputum
• C. Rash around the ankle
• D. Slow heart rate

Answer: (A)

Hives are a common sign of anaphylaxis because this severe allergic reaction triggers widespread release of histamine, causing the skin to develop itchy, raised welts as blood vessels dilate and fluid leaks into the skin. This skin manifestation is typical and often appears early in the reaction, reflecting the systemic nature of anaphylaxis. Coughing with sputum usually points to infection or chronic lung disease rather than a rapid, life-threatening allergic reaction. A rash confined to the ankle is not the widespread, systemic skin involvement seen in anaphylaxis. Slow heart rate is not typical; anaphylaxis commonly causes a fast heart rate as the body tries to maintain blood pressure during shock.

Hives are a common sign of anaphylaxis because this severe allergic reaction triggers widespread release of histamine, causing the skin to develop itchy, raised welts as blood vessels dilate and fluid leaks into the skin. This skin manifestation is typical and often appears early in the reaction, reflecting the systemic nature of anaphylaxis.

Coughing with sputum usually points to infection or chronic lung disease rather than a rapid, life-threatening allergic reaction. A rash confined to the ankle is not the widespread, systemic skin involvement seen in anaphylaxis. Slow heart rate is not typical; anaphylaxis commonly causes a fast heart rate as the body tries to maintain blood pressure during shock.