somnolence
Pronunciation: SOM-no-lens
Abnormal drowsiness or excessive sleepiness that may indicate neurological dysfunction.
Full Definition
Somnolence refers to a state of abnormal drowsiness, sleepiness, or reduced alertness that goes beyond normal fatigue. In neurological contexts, it may indicate dysfunction of the reticular activating system, metabolic disturbances, medication effects, or various pathological conditions affecting consciousness. It represents a milder form of altered consciousness than stupor or coma. Clinical assessment includes evaluating the degree of somnolence, associated symptoms, and response to stimulation. The term is commonly used in neurological examinations and consciousness scales.
Usage
Usage note: Distinguish from normal sleepiness and specify degree and associated circumstances.
In Context
- "The patient exhibited marked somnolence following the seizure episode." — Post-ictal assessment note
- "Medication adjustment was required due to excessive somnolence interfering with daily activities." — Neurology follow-up visit