Which of the following symptoms is commonly associated with upper respiratory infections?

• A. Severe abdominal cramps
• B. High fever and nausea
• C. Swelling and mucus production
• D. Joint pain and stiffness

Answer: (C)

Upper respiratory infections, such as the common cold or sinusitis, are typically characterized by symptoms that affect the nasal passages, throat, and other areas of the upper respiratory tract. The presence of swelling and mucus production is a hallmark of these infections. When the body encounters an upper respiratory infection, it triggers an inflammatory response that often leads to the swelling of the mucous membranes lining the respiratory tract. This inflammation, combined with increased mucus production, can result in blockages, congestion, and other familiar symptoms like a runny nose or coughing.

In contrast, the other symptoms listed—such as severe abdominal cramps, high fever and nausea, and joint pain and stiffness—are more commonly associated with conditions affecting other systems in the body or with more systemic illnesses rather than being specific signs of upper respiratory infections. This understanding highlights why swelling and mucus production are the key symptoms linked directly to upper respiratory infections.