Which symptom is most characteristic of a blocked salivary duct due to a sialolith?

Which symptom is most characteristic of a blocked salivary duct due to a sialolith?

• A. Painful swelling that worsens with meals
• B. Bilateral swelling without pain
• C. Koplik spots
• D. Rash

Answer: (A)

When a stone blocks a salivary duct, drainage is impeded and the affected gland becomes distended and painful. This aligns with the physiology: chewing and eating stimulate more saliva, so the blocked duct experiences increased pressure as saliva production rises, making the pain and swelling worse with meals. That meal-related aggravation is the hallmark feature of sialolith-induced duct obstruction. In contrast, Koplik spots point to measles, a rash can have many causes, and bilateral swelling without pain is less specific and not typical of a discrete duct obstruction. So the symptom that best fits a blocked salivary duct due to a sialolith is painful swelling that worsens with meals.

When a stone blocks a salivary duct, drainage is impeded and the affected gland becomes distended and painful. This aligns with the physiology: chewing and eating stimulate more saliva, so the blocked duct experiences increased pressure as saliva production rises, making the pain and swelling worse with meals. That meal-related aggravation is the hallmark feature of sialolith-induced duct obstruction. In contrast, Koplik spots point to measles, a rash can have many causes, and bilateral swelling without pain is less specific and not typical of a discrete duct obstruction. So the symptom that best fits a blocked salivary duct due to a sialolith is painful swelling that worsens with meals.