Xerostomia
Pronunciation: zeer-oh-STOH-mee-uh
The subjective sensation of dry mouth, distinct from objectively measurable reduced salivary flow (hyposalivation).
Full Definition
Xerostomia refers to the patient's complaint of oral dryness, which may or may not correlate with measurable reductions in salivary output. It is a common side effect of polypharmacy, radiation therapy to the head and neck, and autoimmune conditions such as Sjögren's syndrome. Editors should note that xerostomia describes a symptom, not a diagnosis or a measurable finding. In clinical documents it must be distinguished from hyposalivation, which is an objective measurement. Misuse of the term as a synonym for hyposalivation is a frequent editorial error.
Usage
Usage note: Do not use interchangeably with hyposalivation; xerostomia is a subjective symptom reported by the patient, whereas hyposalivation is an objective finding requiring measurement of salivary flow rate.
In Context
- "The patient reported xerostomia following initiation of tricyclic antidepressant therapy." — Case report
- "Xerostomia, rather than objectively confirmed hyposalivation, was documented as the presenting symptom." — Clinical notes