Agitation in older adults is a behavioral syndrome marked by increased motor activity, restlessness, aggression, and emotional distress, and it is one of the most common reasons families and care staff seek help for an elderly person’s worsening condition.1PubMed Central. Agitation and Dementia: Prevention and Treatment Strategies in Acute and Chronic Conditions While dementia is the backdrop for the majority of cases, agitation can also stem from treatable medical problems, unrecognized pain, medication side effects, or something as straightforward as a noisy room. Understanding which trigger is at work changes everything about how to respond.
What Agitation Actually Looks Like
The word “agitation” covers a wide range of behaviors, and recognizing them matters because they often get dismissed as just part of aging or dementia. Pacing back and forth without a destination, repeatedly asking the same question, pulling at clothing or bed linens, shouting or making repetitive sounds, resisting help with bathing or dressing, and hitting or pushing a caregiver can all fall under the umbrella. These behaviors tend to cluster into a few recognizable patterns: verbal agitation (calling out, complaining, repeating phrases), physical agitation without aggression (restlessness, wandering, fidgeting), and physical aggression (grabbing, striking, throwing objects).
One of the better-known tools for tracking these patterns is the Pittsburgh Agitation Scale, which was designed for direct bedside observation and rates severity across four domains: aberrant vocalizations, motor agitation, aggressiveness, and resisting care.2The American Journal of Geriatric Psychiatry. The Pittsburgh Agitation Scale: A User‐Friendly Instrument for Rating Agitation in Dementia Patients Other scales, like the Agitated Behavior in Dementia scale, were developed specifically for people living at home with a caregiver and focus on how frequently behaviors occur and how distressing caregivers find them.3PubMed. Assessment of agitation in Alzheimer’s disease: the agitated behavior in dementia scale These tools matter less as diagnostic instruments and more as a shared language: they help families describe to a clinician exactly what is happening, rather than saying “she’s been difficult lately.”
Medical Triggers That Get Missed
A sudden spike in agitation in an older person who was previously calm should always raise a flag for an underlying medical cause. Infections top the list, and urinary tract infections deserve special attention. In younger adults, a UTI usually announces itself with burning and urgency. In older adults, those classic symptoms are often absent. Instead, the infection shows up as sudden confusion, increased agitation, drowsiness, falls, or loss of appetite, frequently without any fever at all.4PubMed Central. Urinary Tract Infection Induced Delirium in Elderly Patients: A Systematic Review Pneumonia, constipation, and dehydration can produce similar pictures. When agitation appears abruptly or escalates quickly, the first step should be a basic medical workup, not a behavioral intervention.
Medications themselves are another underappreciated trigger. In studies of older hospitalized patients, drugs have been reported as the cause of delirium in roughly one in ten to nearly one in three cases.5SpringerLink / Drugs & Aging. Drug-induced cognitive impairment in the elderly The culprits are often medications with anticholinergic properties, a category that includes some over-the-counter antihistamines, certain bladder medications, older antidepressants, and some muscle relaxants. Research suggests that the total anticholinergic load across all of a person’s medications matters more than any single drug.6SpringerLink / Drugs & Aging. Drug-induced cognitive impairment in the elderly An older adult taking three or four mildly anticholinergic drugs can develop confusion and agitation even though none of those drugs alone would be expected to cause problems. Reviewing the full medication list, including supplements and over-the-counter products, is one of the simplest and most effective things a clinician can do.
Pain as a Hidden Driver
Imagine you have a throbbing toothache but cannot find the words to say so. You might grimace, push away the person trying to feed you, or pace because you can’t get comfortable. That is roughly the situation for many older adults with advanced dementia who experience pain but lack the ability to communicate it. Agitation in nursing homes has a cross-sectional prevalence above 50%, and pain is considered a crucial component of the discomfort that drives it.7PubMed Central. Efficacy of therapeutic intervention with NanoBEO to manage agitation and pain in patients suffering from severe dementia: a pilot clinical trial
The relationship between pain and agitation is not perfectly straightforward. One longitudinal study of people with dementia admitted to general hospital wards found no clear statistical link between pain and agitation as measured by one standard agitation scale, although pain was associated with broader behavioral and psychological symptoms.8PubMed Central. Pain, agitation, and behavioural problems in people with dementia admitted to general hospital wards: a longitudinal cohort study But other evidence points in the opposite direction: when pain is effectively treated, agitation and aggression symptoms tend to decrease.9PubMed. Treating pain in patients with dementia and the possible concomitant relief of symptoms of agitation The practical takeaway is that whenever an older adult with cognitive decline becomes agitated, a careful pain assessment should be part of the response. Observational pain scales designed for people who cannot self-report, which look for facial grimacing, guarding, changes in breathing, and restlessness, fill the gap that verbal complaints leave behind.
Sundowning and the Body Clock
Caregivers often notice a pattern: things are manageable during the morning and early afternoon, then agitation ramps up as the sun goes down. This phenomenon, widely called sundowning, affects a substantial share of people with dementia. Research on Alzheimer’s disease specifically has linked sundowning to a shift in the body’s internal clock, with data showing a phase delay in the normal daily rhythm of body temperature.10PubMed. Sundowning and circadian rhythms in Alzheimer’s disease In plainer terms, the internal signals that normally tell the brain “it’s evening, wind down” arrive late or scrambled, creating a window of confusion and distress.
The biological explanation involves the suprachiasmatic nucleus, a small cluster of cells in the brain that acts as the master clock. In dementia, this region degenerates, and the body’s production of melatonin, the hormone that helps regulate the sleep-wake cycle, declines.11PubMed Central. Sundown syndrome in persons with dementia: an update The result is that the brain’s sense of day and night becomes muddled. Dim lighting in institutional settings can make this worse because the brain never receives a strong enough “it’s daytime” signal. This is one reason bright light therapy has drawn interest as a potential intervention, which is discussed further below.
Environmental Factors That Amplify Agitation
Noise is one of the most consistently identified environmental triggers. A study of nursing home residents with dementia found that accumulated sound in the environment was a significant predictor of agitated behavior, explaining a meaningful portion of the variation in agitation levels.12PubMed. Do sound levels and space contribute to agitation in nursing home residents with dementia? Think about what a typical shared living environment sounds like: televisions playing in common areas, call bells, meal carts, staff conversations, other residents calling out. For someone whose brain can no longer filter and prioritize sounds effectively, that background becomes overwhelming.
Sensory impairments compound the problem. Hearing loss, which is extremely common in older adults, has been associated with specific behavioral and psychological symptoms in people with cognitive decline.13PubMed Central. Is Hearing Impairment Associated With Specific Behavioural and Psychological Symptoms of Dementia in Japanese Older Adults Attending a Memory Clinic? When you can’t hear what someone is saying or misinterpret ambient sounds, the world becomes confusing and threatening. Simple measures like ensuring hearing aids are in, batteries are charged, and background noise is reduced can sometimes do more than any medication.
Visual impairment works along similar lines. Uncorrected cataracts, dirty glasses, or poor lighting can turn a familiar room into an unfamiliar one. A shadow on the wall can look like a stranger in the room. Addressing these sensory basics is low-cost and low-risk, which makes it frustrating how often they are overlooked in favor of jumping straight to medication.
Non-Drug Approaches That Have Evidence Behind Them
Music therapy is one of the better-studied non-pharmacological interventions. A randomized controlled trial of individualized music therapy for people with dementia found that agitation disruptiveness increased during standard care but decreased during music therapy sessions, a difference that reached statistical significance with a moderate effect size.14PubMed Central. Individual music therapy for agitation in dementia: an exploratory randomized controlled trial The key word there is “individualized.” Playing generic relaxation music in a common area is not the same thing. What works is music that means something to the person: songs from their young adulthood, hymns they sang in church, a genre they loved. A caregiver who knows the person’s history can often select music that has a calming effect within minutes.
Bright light therapy aims to stabilize the disrupted circadian rhythms discussed earlier. Studies using sessions of about 30 minutes have found short-term positive effects on mood and agitation, with greater benefits observed in people with severe dementia than in those with milder forms.15PubMed Central. Bright Light Therapy in Older Adults with Moderate to Very Severe Dementia: Immediate Effects on Behavior, Mood, and Physiological Parameters A randomized controlled trial found limited evidence for agitation reduction overall but did observe improved sleep and suggested the approach may work better during winter months, when natural light exposure is lowest.16PubMed. Bright light therapy for agitation in dementia: a randomized controlled trial The evidence is promising but not overwhelming, and bright light therapy is best thought of as one piece of a broader environmental strategy rather than a standalone fix.
Other non-drug strategies that can help include structured daily routines (which reduce the unpredictability that unsettles people with dementia), gentle physical activity like walking programs, aromatherapy with lavender or other calming scents, and removing environmental stressors like overhead fluorescent lighting or loud televisions. Not every approach works for every person, and the most effective plans tend to combine several of these tailored to the individual.
When Medications Enter the Picture
Medication for agitation in elderly people, especially those with dementia, is a fraught area. The drugs that are most commonly tried carry real risks, and their benefits are more modest than many families expect.
Atypical antipsychotics like risperidone, olanzapine, and aripiprazole have been the most widely studied. A meta-analysis of randomized, placebo-controlled trials found that aripiprazole and risperidone showed efficacy on agitation rating scales, but olanzapine did not. Roughly a third of patients dropped out of these trials regardless of whether they were on the drug or placebo, and the drugs came with notable side effects: excessive sedation, urinary problems, and, for risperidone and olanzapine, movement problems and gait abnormalities. Cognitive test scores actually worsened with the drugs, and there was a significant risk of stroke-like events, especially with risperidone.17The American Journal of Geriatric Psychiatry. Efficacy and Adverse Effects of Atypical Antipsychotics for Dementia: Meta-analysis of Randomized, Placebo-Controlled Trials There is also an increased risk of death associated with antipsychotic use in dementia, which led to a boxed warning on all antipsychotics in many countries. These medications remain in use because sometimes the severity of agitation poses a genuine safety threat, but they should be a last resort, not a first-line response.
Among antidepressants, citalopram has shown the strongest evidence for reducing agitation compared to placebo in network meta-analyses.18PubMed Central. Comparative efficacy and safety of antidepressant therapy for the agitation of dementia: A systematic review and network meta-analysis Trazodone, another antidepressant sometimes used off-label for agitation and sleep, was associated with a higher risk of adverse events in the same analysis.19PubMed Central. Comparative efficacy and safety of antidepressant therapy for the agitation of dementia: A systematic review and network meta-analysis Other drug classes under investigation include anticonvulsants, dextromethorphan-based combinations, cannabinoids, and various anti-dementia drugs, but the evidence base for most of these remains early-stage.20PubMed. Current and Emerging Pharmacological Approaches to Agitation in Alzheimer’s Disease: A Narrative Review of New and Repurposed Therapies
Why Physical Restraints Are Almost Never the Answer
When agitation escalates to a point where safety feels threatened, the instinct to physically restrain the person is understandable. In nursing homes, fall prevention and behavioral problems like agitation are the most frequently cited reasons for using physical restraints.21PubMed Central. Physical Restraint Use in Nursing Homes—Regional Variances and Ethical Considerations: A Scoping Review of Empirical Studies But the evidence strongly argues against routine use. Restraints infringe on the person’s rights and cause physical harm (skin breakdown, muscle wasting, increased agitation from the distress of being restrained), psychological harm, and functional decline. Their effectiveness is considered inadequate for the harms they cause, and the International Psychogeriatric Association has stated they should only be a final recourse.22PubMed. Physical restraint in older people: an opinion from the Early Career Network of the International Psychogeriatric Association
Organizational interventions aimed at implementing a least-restraint policy have shown they can reduce restraint use without increasing adverse events. A Cochrane review found moderate-certainty evidence that such policies reduce the number of residents restrained at all, and substantially reduce the use of belt restraints specifically.23Cochrane Database of Systematic Reviews. Interventions for preventing and reducing the use of physical restraints in all long‐term care settings The alternatives include better staff training in de-escalation, lower bed heights, sensor mats that alert staff to movement, and the environmental modifications discussed earlier. These approaches require more staffing and training, which is a real barrier, but the trade-off of restraining a confused, frightened person is not a neutral one.
The Toll on Caregivers and Healthcare Systems
Agitation does not just affect the person experiencing it. For family caregivers, persistent agitation is one of the most exhausting behavioral symptoms to manage, and it has a measurable effect on whether someone eventually moves to a nursing home. Research has found that the link between agitation and nursing home placement is mediated by caregiver burden: agitation wears caregivers down, and that exhaustion drives the decision to seek institutional care.24PubMed. Impact of Cognitive, Functional, Behavioral Disorders, and Caregiver Burden on the Risk of Nursing Home Placement Persistent behavioral disturbances, rather than one-off incidents, are especially strong predictors of earlier nursing home admission.25Medical Care. The Effects of Incident and Persistent Behavioral Problems on Change in Caregiver Burden and Nursing Home Admission of Persons With Dementia
The financial costs are substantial too. People with Alzheimer’s-related agitation incur roughly 7% higher total healthcare costs per year than those without agitation, driven largely by higher inpatient and post-acute care expenses. Emergency department visits are about 20% more frequent.26PubMed Central. Healthcare Resource Utilization Among Patients With Agitation in Alzheimer Dementia Another real-world cost analysis estimated the difference at over $4,000 per patient per year in additional healthcare spending, mostly from hospitalizations.27PubMed. A real-world assessment of healthcare costs associated with agitation in Alzheimer’s dementia These numbers understate the true burden because they rarely capture the informal costs borne by families: lost wages, reduced work hours, and the physical and mental health consequences of chronic caregiving stress.
Wearable Technology and Early Detection
One of the frustrations with managing agitation is that by the time it is obvious, the person is already in distress and intervention options narrow. Emerging technology is exploring whether agitation can be detected earlier through wearable sensors that track movement patterns, heart rate, skin conductance, and sleep. A scoping review of these technologies found that wearable sensors using multiple types of data and personalized machine-learning models can reliably detect agitation symptoms and support earlier, more tailored responses.28PubMed Central. Digital biomarkers for early agitation detection in dementia: a scoping review of emerging wearable and smart technologies for personalized care The idea is that a sensor might pick up subtle changes in activity or physiology that predict an agitation episode 15 or 30 minutes before it erupts, giving a caregiver time to intervene with a calming activity, a change of environment, or pain medication.
This technology is still in the research phase and far from routine clinical use. Questions about privacy, data management, and the cost of devices remain unresolved. But for families and care facilities struggling with unpredictable episodes, the prospect of a predictive early-warning system is genuinely appealing. Whether it delivers on that promise will depend on how well the algorithms work outside of controlled research settings and whether the technology can be made affordable and unobtrusive enough for everyday use in homes and care facilities.