What are the common symptoms of an upper respiratory infection?

• A. Nasal congestion, sore throat, cough, sneezing
• B. High fever and body rash
• C. Chills and chest pain
• D. Fatigue and vomiting

Answer: (A)

The selection of nasal congestion, sore throat, cough, and sneezing as common symptoms of an upper respiratory infection is accurate. Upper respiratory infections, often caused by viruses such as the common cold or flu, typically present with these symptoms as the body responds to the invading pathogens.

Nasal congestion occurs when the nasal passages become inflamed and filled with mucus, making it difficult to breathe through the nose. A sore throat is often a result of post-nasal drip where mucus irritates the throat. Coughing is a reflex that helps clear mucus and irritants from the airways, while sneezing serves to expel irritants from the nasal passages, further reflecting the body's natural defense mechanisms in response to infection.

Other symptoms such as high fever, body rash, chills, chest pain, fatigue, and vomiting are generally not associated with upper respiratory infections and may indicate other conditions or infections. For example, high fever and body rash are more common in systemic infections like measles or chickenpox, and symptoms like chest pain could suggest lower respiratory issues or cardiac problems rather than an upper respiratory infection.