Restlessness is not confined to a single stage of dementia. It can appear at any point, from mild cognitive impairment through end-of-life care, but it peaks in frequency and intensity during the middle stages. Among patients with dementia-related agitation, 43% were in the moderate stage, 30% in the mild stage, and 17% in the severe stage. At least 90% of people with dementia experience some form of behavioral or neuropsychiatric symptom over the course of the disease, and agitation is one of the most common.
Why Restlessness Spans Multiple Stages
Restlessness in dementia isn’t a single behavior with a single cause. In mild stages, it often looks like anxiety, irritability, or an inability to sit still. A person might pace, wring their hands, or repeat questions. As the disease progresses into the moderate stage, restlessness becomes more physically driven: constant movement, attempts to leave the house, picking at clothing, or an inability to settle into sleep. In severe dementia, restlessness may take the form of moaning, pulling at bedsheets, or tossing and turning in bed.
The prevalence of agitation has been reported at roughly 60% of people with mild cognitive impairment and 76% of those with Alzheimer’s disease specifically. So while the middle stage is where restlessness tends to be most visible and disruptive, it is by no means absent in earlier or later phases.
The Middle Stages: When Restlessness Peaks
The moderate stage of dementia is where restlessness typically becomes a daily concern for caregivers. This is the period when a person’s internal clock, regulated by a small structure in the brain called the suprachiasmatic nucleus, begins to degrade significantly. That structure controls circadian rhythms, and as it deteriorates, the body loses its ability to distinguish day from night. Melatonin production drops or becomes erratic. The result is fragmented sleep, daytime drowsiness, and increased agitation in the late afternoon and evening.
This late-day restlessness is commonly called sundowning. Movement-related sundowning behaviors are most prominent in the mid-stages of Alzheimer’s disease and somewhat less so in more advanced stages. When sundowning appears in the early stages, it has been associated with faster cognitive decline going forward, which makes it worth noting and discussing with a care team.
Wandering also peaks during the moderate stage. It is linked to cognitive scores in the lower range (roughly 13 or below on the 30-point Mini-Mental State Examination), reflecting significant problems with memory, orientation to time and place, and the ability to follow a conversation. That said, eloping behaviors, where a person leaves a safe environment, occur even in mild dementia, accounting for nearly 44% of cases in one study.
Restlessness at the End of Life
A distinct form of restlessness emerges in the final weeks of life, sometimes called terminal restlessness or terminal agitation. This generally occurs within the last two weeks before death and looks quite different from the restlessness seen in earlier stages. A person may kick their legs, pull at their clothes or bedsheets, grimace, moan, or become uncharacteristically combative or hostile. Hallucinations, paranoia, and sudden personality changes are also common during this period.
Terminal restlessness can be distressing for families who may interpret it as pain or fear. As death approaches more closely, these signs of agitation usually fade, and many people become unresponsive in their final days and hours.
Physical Causes That Mimic or Worsen It
Not all restlessness in dementia comes from the disease itself. Pain is one of the most common hidden drivers, especially in people who have lost the ability to describe what they’re feeling. A person with dementia who keeps shifting positions, standing up and sitting down, or becoming agitated at certain times of day may be experiencing physical discomfort they can no longer articulate.
Other treatable causes include delirium from infections like urinary tract infections, low blood sugar, dehydration, and constipation. Delirium is distinct from dementia-driven restlessness because it always has an underlying, reversible cause and tends to fluctuate, with periods of heightened confusion and agitation alternating with relative calm. Certain medications can also trigger restlessness, particularly antipsychotics and the withdrawal effects of sedatives. Ruling out these physical causes is an important first step before attributing restlessness solely to the progression of dementia.
Sleep Disruption Across Stages
Nighttime restlessness follows a predictable trajectory. Fragmented sleep increases in step with the severity of dementia. Early on, a person might wake once or twice during the night and have trouble falling back asleep. By the moderate and severe stages, the sleep-wake cycle can reverse entirely, with a person sleeping much of the day and remaining active, confused, or agitated through the night.
The biological explanation involves the progressive destruction of brain pathways responsible for initiating and maintaining sleep. Beyond the circadian pacemaker, brainstem regions that regulate the transitions between sleep stages also deteriorate. The practical result is less deep sleep, less dream sleep, and more time spent in a light, easily disrupted state. For caregivers, this often becomes the single most exhausting aspect of the disease.
Approaches That Help
Because restlessness often reflects an unmet need, the most effective first step is identifying what that need might be. Boredom, pain, overstimulation, and a disrupted routine are the most common triggers. Tailored activity programs, where a caregiver is coached to match activities to the person’s remaining abilities and interests, have shown meaningful reductions in agitation, shadowing, and repetitive questioning. In one study, caregivers trained in this approach reported significantly less agitation in the people they cared for over a four-month period.
Therapeutic touch, a technique involving gentle, intentional physical contact, has reduced both restlessness and vocal agitation in studies of people with dementia. Lavender oil applied to the skin has also been tested with some positive signals, though results are more mixed. Consistent daily routines, exposure to bright light during the morning, and reducing caffeine and screen exposure in the afternoon can help stabilize the circadian rhythm disruptions that drive much of the late-day restlessness.
For nighttime restlessness specifically, keeping the environment dark and quiet after sundown, limiting daytime napping when possible, and maintaining regular mealtimes all reinforce the body’s weakened internal clock. These strategies don’t eliminate restlessness, but they can meaningfully reduce its frequency and intensity, particularly in the middle stages when the behavior tends to be most disruptive.