Which symptom is described by nasal discharge that can be clear, yellow, or green?

• A. Congestion
• B. Sore throat
• C. Rhinorrhea
• D. Epistaxis

Answer: (C)

Rhinorrhea is the medical term for nasal discharge. It describes the flow of mucus from the nose, and the color can vary from clear to yellow or green depending on the inflammatory or infectious process. Clear mucus often occurs with allergies or viral irritation, while yellow or green mucus can indicate a longer or more B-cell/neutrophil–driven inflammatory response, sometimes with bacterial involvement. This symptom is distinct from congestion (a feeling of nasal blockage), sore throat (throat pain), and epistaxis (nosebleed).