What is the term for reduced salivary secretion rate (distinct from xerostomia)?

What is the term for reduced salivary secretion rate (distinct from xerostomia)?

• A. Hyposalivation
• B. Hyper-salivation
• C. Xerostomia
• D. Salivary hypofunction

Answer: (A)

Hyposalivation is the reduced saliva flow rate. It refers to an objective decrease in saliva production, something that can be measured with saliva collection over time (sialometry) or observed clinically. This is distinct from xerostomia, which is the patient’s subjective sense of having a dry mouth. A person can report dryness even if saliva production is normal, and conversely, someone may have low saliva output without noticing it. The term salivary hypofunction is similar, but hyposalivation specifically emphasizes the measurable drop in flow, which is why it fits best here.

Hyposalivation is the reduced saliva flow rate. It refers to an objective decrease in saliva production, something that can be measured with saliva collection over time (sialometry) or observed clinically. This is distinct from xerostomia, which is the patient’s subjective sense of having a dry mouth. A person can report dryness even if saliva production is normal, and conversely, someone may have low saliva output without noticing it. The term salivary hypofunction is similar, but hyposalivation specifically emphasizes the measurable drop in flow, which is why it fits best here.