How to handle a dementia crisis at home

A dementia crisis typically involves sudden, frightening behavioral changes — severe agitation, aggression, hallucinations, extreme confusion, or dangerous behavior like attempting to leave the home. These episodes are terrifying for caregivers and distressing for the person with dementia. The immediate goal is de-escalation and safety; the follow-up goal is understanding the cause and preventing recurrence.

In the moment: de-escalation techniques

Do not argue, correct, or reason with someone in a dementia crisis — this escalates rather than calms. Instead: speak slowly and calmly in short sentences; use their name; approach from the front so as not to startle; reduce noise and stimulation in the environment; redirect to a different activity or location; acknowledge their feelings (‘I can see you’re upset — I’m here with you’); and maintain your own calm, which is deeply regulating for a person in distress.

Call 911 if safety is at immediate risk

Call 911 if there is immediate physical danger — to your loved one or to you. Tell the dispatcher that the person has dementia so officers can be prepared for an altered mental state. In many areas, mobile crisis teams that include mental health responders are available as an alternative to police response for non-violent behavioral crises.

After the crisis: find the cause

Sudden behavioral changes in dementia often have a medical trigger — urinary tract infection (UTI), pain, constipation, new medication, sleep disruption, or environmental change. Contact the physician promptly and describe the change specifically. A medical workup is warranted for any sudden, significant behavioral change in someone with dementia. If the cause is environmental or psychological, work with the physician or a dementia specialist to address it.

Frequently asked questions

What is sundowning in dementia?

Sundowning refers to increased confusion, agitation, or behavioral disturbance in the late afternoon and evening — a common pattern in dementia, particularly Alzheimer’s. Strategies include maintaining a consistent daily routine, ensuring adequate lighting in the evening, reducing afternoon and evening stimulation, and discussing medication options with the physician if behavioral symptoms are severe.

When should someone with dementia move to memory care after a behavioral crisis?

Recurring behavioral crises — particularly aggression, severe wandering, or behavior that endangers the person or caregiver — are a strong signal that home care has exceeded safe limits. If crises are happening regularly and cannot be managed with environmental modification, medication adjustment, and additional support, memory care evaluation is appropriate.

What medications are used for dementia behavioral symptoms?

Physicians may prescribe medications for specific behavioral symptoms — antipsychotics for hallucinations and severe agitation, antidepressants for depression and anxiety, sleep medications for severe sleep disruption. These medications have significant risks in older adults with dementia and should be used at the lowest effective dose, with regular reassessment. Non-pharmacological approaches should be tried first.

Is it safe to leave someone with dementia home alone?

Whether it is safe depends on the stage of dementia and specific risks. In early dementia, brief periods alone may be safe with appropriate safeguards. In moderate to severe dementia — when wandering, kitchen safety, medication management, or falls are concerns — being left alone is typically not safe. This is one of the factors that most commonly drives decisions about in-home care or facility placement.

What is the best way to prevent dementia wandering?

Prevention strategies include: door alarms and locks placed high (out of the typical visual field of someone looking for the exit), identification bracelets or GPS devices, the Safe Return program (a national wandering response program), simplifying the home environment to reduce confusion, and maintaining a consistent, structured daily routine. Tell neighbors and local businesses about the risk so they can help if your loved one is found outside alone.