Geriatric Psychiatry Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
mild cognitive impairment
Cognitive decline greater than expected for age but not severe enough to significantly interfere with daily functioning.
perseveration
Repetitive, persistent behavior or thought patterns that continue inappropriately beyond their relevance, common in deme...
person-centered dementia care
A care approach that focuses on the individual's unique needs, preferences, and dignity rather than just managing sympto...
POLST form
Physician Orders for Life-Sustaining Treatment document that translates patient preferences into medical orders for seri...
polypharmacy
The concurrent use of multiple medications, particularly problematic in elderly patients due to increased risk of advers...
primary progressive aphasia
A neurodegenerative syndrome characterized by gradual loss of language abilities while other cognitive functions remain...
pseudobulbar affect
A neurological condition causing sudden, uncontrollable episodes of crying or laughing that are disproportionate to or i...
pseudodementia
Cognitive impairment secondary to psychiatric conditions, particularly depression, that mimics dementia but is potential...
psychosocial intervention
Non-pharmacological treatments that address psychological and social factors contributing to mental health conditions.
rapid eye movement sleep without atonia
A polysomnographic finding where normal muscle paralysis during REM sleep is absent, often associated with REM sleep beh...
reality orientation
Therapeutic technique that involves repeatedly presenting factual information about time, place, and person to patients...
REM sleep behavior disorder
Sleep disorder where patients act out dreams due to loss of normal muscle paralysis during REM sleep.
reminiscence therapy
Therapeutic approach using recall of past experiences to improve mood, cognition, and social engagement in elderly patie...
retrogenesis
Progressive loss of abilities in reverse order of their acquisition during development, observed in Alzheimer's disease...
RUD scale
The Resource Utilization in Dementia scale, an instrument measuring the economic impact and resource consumption associa...
semantic dementia
A progressive neurodegenerative condition characterized by loss of semantic memory and knowledge of word meanings while...
sleep architecture disruption
Alterations in normal sleep stage patterns and transitions commonly seen in elderly patients with psychiatric and neurol...
sleep-wake cycle disruption
Disturbances in normal circadian rhythms common in elderly patients with psychiatric and neurological conditions, affect...
subsyndromal delirium
A condition where patients exhibit some features of delirium but do not meet full diagnostic criteria, representing a cl...
sundown syndrome
Pattern of increased confusion, agitation, and behavioral disturbances that occur in the late afternoon or evening in de...
sundowning
Behavioral pattern in dementia patients characterized by increased confusion and agitation in late afternoon and evening...
tardive dyskinesia
Late-onset movement disorder characterized by involuntary movements, typically caused by long-term antipsychotic use.
terminal agitation
Restlessness, confusion, and distress occurring in the final days or weeks of life, requiring specialized palliative int...
terminal lucidity
An unexpected return of mental clarity and communication abilities in dying patients with severe cognitive impairment sh...
terminal restlessness
Agitation and motor restlessness occurring in dying patients, often accompanied by confusion and altered consciousness.