What Is Agitation in Dementia?
Agitation is one of the most frequent and challenging neuropsychiatric symptoms of dementia — especially Alzheimer's disease. It manifests as restlessness, verbal or physical aggression, wandering, resistance to care, and repetitive vocalizations. It affects up to 70-90% of patients with dementia at some point during the course of the disease.
These behaviors are not "tantrums" or malice — they are manifestations of a diseased brain that has lost the ability to process stimuli appropriately, communicate needs, and regulate emotions. Agitation often reflects discomfort (pain, infection, constipation), excessive environmental stimuli, or unmet needs.
Agitation in dementia is the leading cause of early institutionalization, caregiver burden, and the use of physical and chemical restraint. Person-centered approaches that focus on understanding the underlying causes are more effective — and more humane — than simple pharmacological sedation.
Neurobiological Origin
Agitation stems from degeneration in brain regions that regulate emotion and behavior — especially the prefrontal córtex, amygdala, and limbic system.
Unmet Needs
Agitation is often the only way a patient with dementia can communicate pain, fear, hunger, loneliness, or discomfort.
Non-Pharmacological Approach First
Current guidelines recommend non-pharmacological interventions as first-line treatment, reserving medications for severe cases.
Pathophysiology
Agitation in dementia results from the convergence of neurobiological, psychological, and environmental factors. The progressive degeneration of neural networks for emotional regulation reduces the patient's capacity to cope with stress, discomfort, and environmental changes, lowering the threshold for agitated behaviors.
Degeneration of Regulatory Circuits
The prefrontal córtex, which normally inhibits impulsive emotional responses, is progressively compromised by dementia. The amygdala, the center of emotional processing, can become hyperreactive to stimuli that the patient can no longer interpret correctly. The result is a "fight or flight" response to everyday situations.
Neurochemical Dysfunction
Degeneration across multiple neurotransmitter systems contributes to agitation. The cholinergic system (essential for cognition and attention) is severely depleted. Serotonergic dysfunction contributes to irritability and aggression. Alterations in the noradrenergic system reduce the capacity for mood regulation and the stress response.
Symptoms
Agitation in dementia encompasses a broad spectrum of behaviors, from mild restlessness to physical aggression. The behaviors can be classified as verbal, physical, aggressive, and non-aggressive agitation. The "sundowning" pattern — worsening of symptoms in the late afternoon and early evening — is particularly common.
Manifestations of Agitation in Dementia
- 01
Non-aggressive verbal agitation
Constantly repeating phrases or questions, calling out, persistent complaining, moaning, and vocalizing. Often expresses fear, loneliness, or discomfort.
- 02
Aggressive verbal agitation
Shouting, cursing, verbal threats. May occur during intimate care (bathing, dressing) that the patient perceives as threatening.
- 03
Non-aggressive physical agitation
Wandering (walking with no destination), motor restlessness, repeatedly handling objects, trying to leave the home. May represent a search for something familiar.
- 04
Aggressive physical agitation
Pushing, slapping, biting, kicking, throwing objects. Generally occurs as a fear or defense reaction to stimuli the patient interprets as a threat.
- 05
Resistance to care
Refusing to bathe, eat, take medication, or get dressed. Often because the patient doesn't understand the purpose of the care or feels invaded.
- 06
Sundowning (late-day worsening)
Worsening confusion, agitation, and irritability in the late afternoon and early evening. Linked to circadian changes and accumulated fatigue.
- 07
Sleep disturbances
Reversed sleep-wake cycle, waking up confused at night, nighttime wandering. Contributes to caregiver exhaustion.
Diagnosis
Evaluation of agitation in dementia requires exclusion of treatable causes before attributing the behavior to dementia alone. Urinary infection, pain, constipation, medication effects, and delirium are frequent and reversible causes of agitation. The Neuropsychiatric Inventory (NPI) is the standard instrument for quantifying neuropsychiatric symptoms.
🏥Systematic Assessment of Agitation — IPA Criteria
Fonte: International Psychogeriatric Association
Step 1: Exclude medical causes
- 1.Uncommunicated pain (observe facial expression, posture, vocalization)
- 2.Infection (urinary, respiratory, cutaneous)
- 3.Constipation or urinary retention
- 4.Medication side effects (anticholinergics, benzodiazepines)
- 5.Delirium superimposed on dementia
- 6.Dehydration or metabolic disturbances
Step 2: Assess environmental and psychological factors
- 1.Excessively noisy or stimulating environment
- 2.Changes in routine or environment
- 3.Loneliness, boredom, or lack of meaningful activities
- 4.Inappropriate caregiver approach
- 5.Reaction to delusions or hallucinations
Step 3: Characterize the behavior
- 1.Frequency, intensity, and duration of episodes
- 2.Predominant time of day (sundowning?)
- 3.Triggering and mitigating factors
- 4.Impact on patient and caregiver safety
TREATABLE CAUSES OF AGITATION IN DEMENTIA
| CAUSE | HOW TO INVESTIGATE | FREQUENCY |
|---|---|---|
| Pain | PAINAD scale (Pain Assessment in Advanced Dementia) | Very common — frequently uncommunicated |
| Urinary infection | Urinalysis, urine culture | Most common cause of delirium in older adults |
| Constipation | Abdominal exam, rectal exam | Underdiagnosed in patients with dementia |
| Medications | Review prescription — anticholinergics, benzodiazepines | Polypharmacy is extremely common |
| Delirium | CAM (Confusion Assessment Method) | Acute confusion superimposed on chronic confusion |
| Environment | Observation of surroundings — noise, lighting, routine | Environmental changes are frequent triggers |
Differential Diagnosis
Agitation in a patient with dementia isn't always simply "dementia behavior". Identifying and treating reversible causes is the most important step in clinical management. Delirium, uncommunicated pain, depression, and medication side effects are treatable conditions that may present as agitation.
Delirium Superimposed on Dementia
Delirium superimposed on dementia is the most urgent condition to exclude. Delirium differs from typical agitation by its acute onset (hours to days), fluctuation throughout the day, and altered level of consciousness. Any abrupt worsening of behavior in a patient with dementia should be treated as delirium until proven otherwise.
The Confusion Assessment Method (CAM) is the validated bedside instrument for identifying delirium. Common precipitating causes include urinary infection, pneumonia, dehydration, constipation, and new medications with anticholinergic effects. Reversing the cause treats the delirium — and with it, the agitation.
Uncommunicated Pain and Depression in Dementia
Patients with advanced dementia often can't verbalize pain. Uncommunicated pain is one of the most underdiagnosed causes of agitation — arthritis, pressure ulcers, kidney stones, or simple constipation may manifest exclusively as agitation or resistance to care. Observational scales such as PACSLAC and DOLOPLUS allow identification of pain without reliance on verbal communication.
Depression in dementia may present with agitation, crying, food refusal, and isolation rather than the typical symptoms of sadness. The Cornell Scale for Depression in Dementia was developed specifically for this context, based on behavioral observation and caregiver report.
Psychosis in Dementia and Adverse Medication Reactions
Psychosis in dementia — with visual hallucinations and paranoid delusions — is frequent, especially in dementia with Lewy bodies and advanced Alzheimer's. Agitation may be reactive to delusions ("someone is robbing me") or to hallucinations. The Neuropsychiatric Inventory (NPI) quantifies the presence and severity of these symptoms.
Adverse medication reactions are an underestimated cause of agitation in older adults. Anticholinergics (oxybutynin, diphenhydramine), benzodiazepines, opioids, and some antipsychotics can paradoxically worsen agitation. Careful review of the medication list — ideally with assessment using the Naranjo Scale for causality — is a mandatory part of the evaluation.
DIFFERENTIAL DIAGNOSIS
Differential Diagnosis
Delirium Superimposed on Dementia
- Acute onset (hours to days)
- Fluctuation throughout the day
- Altered level of consciousness
- Identifiable precipitating cause (infection, medication, dehydration)
- Acute agitation in a patient with dementia = investigate delirium — it's treatable
Diagnostic Tests
- CAM (Confusion Assessment Method)
- Urinalysis and urine culture
- CBC and CRP
- Review of recent medications
Once delirium has resolved, acupuncture may help with behavioral rehabilitation.
Uncommunicated Pain
- Agitation during mobilization or care
- Facial expression of pain (frowning, grimacing)
- Vocalizations on touch
- Protective posture of a body region
Diagnostic Tests
- PACSLAC scale
- DOLOPLUS scale
- Targeted physical exam (skin, joints, abdomen)
Acupuncture for chronic pain management may reduce agitation secondary to uncommunicated pain.
Depression in Dementia
Read more →- Frequent crying without apparent cause
- Food refusal and weight loss
- Isolation and apathy
- Agitation predominantly in the morning
Diagnostic Tests
- Cornell Scale for Depression in Dementia
Acupuncture shows benefits for depression in older adults and may be useful as an adjunct.
Psychosis in Dementia
- Visual hallucinations (especially in dementia with Lewy bodies)
- Paranoid delusions ("they are robbing me", "there are intruders in the house")
- Agitation reactive to psychotic content
- Misidentification of people (Capgras syndrome)
Diagnostic Tests
- Structured neuropsychiatric assessment
- NPI (Neuropsychiatric Inventory)
Acupuncture may reduce anxiety and autonomic hyperactivation associated with psychosis.
Adverse Medication Reaction
- Agitation after starting or adjusting a medication
- Use of anticholinergics, benzodiazepines, or opioids
- Polypharmacy (>5 medications)
- Paradoxical worsening with sedatives
Diagnostic Tests
- Complete review of the medication list
- Naranjo Scale for causality
Acupuncture doesn't involve administering drugs and has no documented pharmacological interactions — a potential advantage for patients on multiple medications, to be considered by the attending physician.
Treatment
Treatment follows the principle of "non-pharmacological first, then pharmacological". Non-pharmacological interventions are recommended as first-line by all international guidelines. Medications are reserved for cases in which there is risk of harm to the patient or caregiver and when non-pharmacological approaches have been insufficient.
Non-Pharmacological Interventions
Music therapy is the intervention with the strongest evidence — especially music familiar to the patient, which activates preserved emotional memories. It significantly reduces agitation with a favorable safety profile and no pharmacological adverse effects. Aromatherapy with lavender, multisensory stimulation (Snoezelen), animal-assisted therapy, and personalized meaningful activities also show benefit.
Caregiver training is one of the most effective interventions. Training in adapted communication (short phrases, calm tone, eye contact), emotional validation, redirection techniques, and crisis management significantly reduces the frequency and severity of agitation episodes.
PHARMACOTHERAPY — WHEN NECESSARY
| MEDICATION | INDICATION | BENEFITS | RISKS |
|---|---|---|---|
| Cholinesterase inhibitors | Mild to moderate agitation in Alzheimer's | Modest behavioral benefit, no sedation | Nausea, diarrhea — generally well tolerated |
| Citalopram / Escitalopram | Moderate agitation — first-line pharmacological option | Reduces agitation without excessive sedation | QT prolongation at doses >20mg in older adults |
| Trazodone | Insomnia and evening agitation | Improvement in sleep, reduction of sundowning | Orthostatic hypotension, sedation |
| Risperidone (low dose) | Severe agitation with risk of harm | The only atypical antipsychotic approved for use in dementia (in some countries) | Cerebrovascular risk, parkinsonism, increased mortality |
| Brexpiprazole | Agitation in Alzheimer's disease | Approved by the FDA in 2023 for agitation in Alzheimer's | Headache, dizziness, drowsiness |
Immediate
Rule out treatable causes (pain, infection, constipation, medications). Modify the environment immediately. Use adapted communication techniques.
Weeks 1-4
Implement structured non-pharmacological interventions: music therapy, personalized activities, a predictable routine. Train caregivers.
Months 1-3
Assess the response to non-pharmacological interventions. If insufficient, consider careful pharmacotherapy (citalopram, trazodone).
Every 3-6 months
Reassess whether medication is still needed. Attempt to taper gradually. Adjust the plan as the disease progresses.
Acupuncture as Treatment
Acupuncture has been investigated as a complementary non-pharmacological approach for neuropsychiatric symptoms in dementia. The proposed mechanisms — still under investigation — include possible cholinergic modulation (with effects described in preclinical studies on cholinergic neurons), increased endorphin release, possible reduction of neuroinflammatory markers, and modulation of the autonomic nervous system.
Preliminary studies suggest acupuncture may reduce agitation, anxiety, and sleep disturbances in patients with dementia. A potential advantage is its distinct adverse-event profile compared with antipsychotics and benzodiazepines, though acupuncture has its own adverse events (hematoma, local pain, syncope; rarely pneumothorax or infection) — particularly relevant in frail older adults. Therapeutic touch and individualized attention during the session may add to the calming effect.
Acupuncture is one option among the non-pharmacological interventions recommended for agitation in dementia. The technique must be adapted for patients with dementia — shorter sessions, a gentle approach, and simplified communication. Acupressure (without needles) may be an alternative for patients who don't tolerate needles.
Prognosis
Agitation in dementia tends to fluctuate over the course of the disease, with periods of greater and lesser intensity. In early and intermediate stages, environmental and behavioral interventions can significantly control symptoms. In advanced stages, more frequent pharmacological adjustment may be necessary.
Effectively managing agitation substantially improves quality of life for both patient and caregiver. It reduces the need for early institutionalization and lets the patient stay in a familiar environment longer. Caregiver support — including support groups, respite, and psychoeducation — is an essential part of the therapeutic plan.
Dementia's course is progressive and irreversible with current treatments. However, appropriately managing neuropsychiatric symptoms is an área where we can make a significant difference in the patient's and family's experience throughout the disease.
Myths and Facts
Myth vs. Fact
Agitation is 'malice' or 'stubbornness' in the patient with dementia.
Agitation is a neuropsychiatric symptom of the disease, caused by degeneration in the brain circuits that regulate emotion and behavior. Patients with dementia can't control these behaviors. Agitation is often the only way they can communicate discomfort or fear.
Myth vs. Fact
The best solution is to sedate the patient só they remain calm.
Pharmacological sedation with antipsychotics increases the risk of stroke, falls, pneumonia, and death in patients with dementia. Non-pharmacological interventions — music therapy, meaningful activities, environmental modification — are safer, more effective in the long term, and preserve the patient's dignity.
Myth vs. Fact
Nothing can be done — it's an inevitable part of dementia.
Although agitation is common in dementia, much can be done to reduce and manage it. Identifying and treating reversible causes (pain, infection), adapting the environment, training caregivers, and applying non-pharmacological interventions can drastically reduce how often and how intensely episodes occur.
When to Seek Help
If you're caring for a person with dementia who presents with agitation, seek medical guidance. Appropriate management improves quality of life for everyone involved. You also deserve support — caring for the caregiver is an essential part of treatment.
Frequently Asked Questions about Agitation in Dementia
This phenomenon is called "sundowning" and is very common in dementia. It occurs due to changes in circadian rhythms caused by brain degeneration, combined with accumulated fatigue throughout the day. Natural light is reduced, the environment becomes less predictable, and the patient's capacity to regulate emotions wears out. Helpful strategies include ensuring good exposure to natural light during the day, keeping a predictable routine, reducing stimuli in the evening, and offering calming activities. A physician can advise on routine adjustments and, if necessary, pharmacological options for sundowning.
Yes — frequently it is exactly that. The "unmet-needs" model proposes that agitation is an attempt to communicate pain, hunger, cold, the need to use the bathroom, loneliness, fear, or discomfort that the patient can no longer express verbally. Before any intervention, it is worth investigating: is the patient in pain? Hungry or thirsty? Cold or hot? Wanting to use the bathroom? Frightened? Resolving the underlying need often resolves agitation without the need for medication.
Seek medical evaluation if: agitation came on suddenly or worsened acutely (which may indicate delirium from infection or another treatable medical problem); the patient is at risk of harming themselves or others; behaviors are preventing essential care (feeding, medication, hygiene); the caregiver has reached the breaking point; or agitation is progressively worsening. Any abrupt change in behavior in a patient with dementia should be evaluated as a medical urgency.
Antipsychotics carry an FDA warning regarding increased risk of stroke and mortality in older adults with dementia. For this reason, they are reserved for severe cases with real risk of harm to the patient or caregiver, when non-pharmacological interventions have been insufficient. When necessary, they are used at the lowest effective dose and for the shortest possible time, with review every 3-6 months to attempt gradual reduction. They should never be used as "chemical restraint" for convenience. A physician should perform the risk-benefit assessment on a case-by-case basis.
Music therapy has the strongest evidence — especially music familiar to the patient, which activates preserved emotional memories. Other evidence-backed interventions include: training caregivers in adapted communication and redirection techniques, meaningful and personalized activities, multisensory stimulation (Snoezelen), lavender aromatherapy, animal-assisted therapy, and adapted physical exercise. Modifying the environment (reducing noise, ensuring adequate lighting, removing confusing mirrors) also works.
DICE is a structured four-step approach: Describe the behavior (when it occurs, duration, frequency, triggers), Investigate causes (pain? infection? constipation? medications? inadequate environment?), Create a plan (non-pharmacological interventions, environmental modification, caregiver training), and Evaluate the result. This method systematizes the investigation before resorting to medications and improves the chances of finding treatable causes. Most international guidelines recommend it for managing neuropsychiatric symptoms in dementia.
Acupuncture is being investigated as a complementary non-pharmacological intervention for neuropsychiatric symptoms in dementia. The proposed mechanisms — still under investigation — include cholinergic modulation, a possible reduction in inflammatory markers, and regulation of the autonomic nervous system. Preliminary studies suggest it reduces agitation, anxiety, and sleep disturbances. A potential advantage is its distinct adverse-event profile compared with antipsychotics, though acupuncture has its own adverse events (hematoma, local pain, syncope) that matter in frail older adults. For patients who don't tolerate needles, acupressure is an alternative. A medical acupuncturist can assess the indication and adapt the technique, always coordinating with the team caring for the patient.
Principles of adapted communication for an agitation crisis: stay calm (the patient perceives your anxiety and may escalate); approach slowly within their visual field; use short, simple phrases; speak in a calm, low tone; make gentle eye contact without being threatening; do not argue or try to correct delusions; validate the emotion ("I know you are afraid — I am here with you"); offer gentle distraction (a favorite song, a beloved food, a familiar object); respect physical space and avoid surprise touches. If nothing works, sometimes briefly stepping away is the best strategy.
Caregiver burden is a real medical condition. Essential strategies: join support groups for caregivers of people with dementia (many are free through ABRAz and local government services); use respite services — someone to stand in for you for a few hours só you can rest; learn to spot your own signs of burnout (irritability, crying easily, insomnia, hopelessness); don't hesitate to ask other family members for help; talk to your physician if you're experiencing symptoms of depression or anxiety. Caring for yourself isn't selfishness — it's what allows you to keep caring.
Yes — several strategies reduce how often and how intensely episodes occur: keep a predictable daily routine (meals, bathing, and sleep at consistent times); avoid unnecessary changes to the environment; ensure good exposure to natural light during the day; maintain meaningful activities adapted to the cognitive level; reduce stimuli in the evening; proactively treat pain, constipation, and infections; review medications periodically with the physician; and train all caregivers in the same adapted communication techniques. A physician specialized in dementia can build a personalized preventive plan.
Related Reading
Deepen your knowledge with related articles