Agitation in dementia is distress expressed through pacing, restlessness, shouting, resistance, or physical aggression. It often happens because brain changes make stimulation harder to process, while discomfort, fear, fatigue, illness, medication effects, or environmental change add stress. What helps depends on the cause: check for medical problems and unmet needs, then reduce demands and respond calmly. Agitation can seriously affect both the person and those caring for them, but it should not automatically be treated as unavoidable dementia progression.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- What can trigger agitation?
- When does agitation need medical assessment?
- What should you do during an episode?
- What helps prevent repeated agitation?
- When might medication be considered?
What can trigger agitation?
A person with dementia may have difficulty understanding new information, explaining discomfort, or adapting when something changes. A noisy room, unfamiliar caregiver, complicated task, or disrupted routine can become overwhelming. Basic physical needs are easy to miss when communication is impaired. Pain, hunger, thirst, constipation, a full bladder, fatigue, infection, and skin irritation can all contribute.
Noise, glare, and overly complex routines can also provoke distress, according to the Alzheimer's Association guidance on anxiety and agitation. Look for patterns around the behavior. Note what happened immediately before it, where the person was, who was present, and whether the episode eased after food, rest, toileting, pain relief, or a quieter setting. The behavior may be communicating a need even when its meaning is unclear.
When does agitation need medical assessment?
Arrange a thorough medical assessment when agitation begins suddenly or becomes noticeably worse. A clinician can look for physical illness, medication side effects, interactions, pain, or delirium rather than assuming dementia alone caused the change.
Useful details to share include: The National Institute for health and Care Excellence recommends a structured search for clinical and environmental causes, including pain, delirium, and inappropriate care, before treatment begins. Its dementia guideline then prioritizes psychosocial and environmental approaches.
- When the change began and whether it was abrupt
- New or recently changed medications
- Signs of pain, infection, constipation, or urinary discomfort
- Changes in sleep, eating, drinking, or mobility
- The time, setting, and events surrounding each episode
What should you do during an episode?
Start by lowering pressure. reduce noise and distractions, move back if the person feels crowded, and use a calm voice. Offer simple reassurance instead of correcting the person's account or insisting that they complete a task. Try one clear option at a time: a drink, the toilet, a comfortable chair, a short walk, music, or another familiar activity.
If a task appears to be causing distress, pause it or divide it into smaller steps. Avoid arguing, confronting, restraining, or surrounding the person. These responses may add fear and stimulation when the person already feels overwhelmed. If anyone faces immediate danger, prioritize space and safety while seeking appropriate help.
What helps prevent repeated agitation?
Prevention is individual. Simplify routines, reduce glare and background noise, allow extra time, and match activities to the person's abilities and preferences. Exercise and meaningful activity may help when boredom, restlessness, or excess stimulation contributes.
Personalized activities matter more than simply keeping someone occupied. A familiar song, folding towels, walking, or another manageable task may provide structure without creating a new demand. Evidence from 33 randomized trials found that person-centred care, staff communication training, adapted care mapping, planned activities, and music therapy reduced agitation in care homes. Those findings mainly apply to care-home settings, and their success depends on how well staff carry out the approaches.
When might medication be considered?
Medication does not replace the search for pain, illness, discomfort, or environmental triggers. A clinician must weigh the severity of agitation, the response to non-drug measures, and the risks of a particular medicine. FDA-approved options discussed here apply specifically to agitation associated with dementia due to Alzheimer's disease, not every form of dementia.
In 2023, the FDA approved brexpiprazole after two 12-week trials showed improvement in caregiver-rated agitation compared with placebo. The FDA approval notice also notes its boxed warning about increased mortality in elderly people with dementia-related psychosis. In April 2026, the FDA approved dextromethorphan-bupropion, sold as Auvelity, for the same Alzheimer's-dementia indication. Two randomized trials supported its efficacy, but the FDA announcement identifies risks including seizures, high blood pressure, and activation of mania or hypomania.
