Which is a common sign of severe allergic reaction?

• A. Difficulty in breathing
• B. Excessive sweating
• C. Elevated heart rate
• D. Persistent coughing

Answer: (A)

A common sign of a severe allergic reaction, often referred to as anaphylaxis, is difficulty in breathing. This symptom arises when the airways constrict due to the release of histamines and other chemicals from the immune system in response to an allergen. The swelling and tightening of the throat and airways can lead to wheezing, hoarseness, and significant respiratory distress. Recognizing difficulty in breathing as a key indicator of anaphylaxis is crucial for timely intervention, as it suggests that the reaction is compromising the ability to breathe normally, which can lead to life-threatening situations if not treated promptly.

Other symptoms associated with severe allergic reactions may include hives, swelling of the face, lips, or tongue, gastrointestinal distress, and a rapid drop in blood pressure, but difficulty in breathing remains a hallmark sign that necessitates immediate medical attention.