Crying can happen at any stage of dementia, but it becomes more frequent and harder to control in the middle and late stages as the brain loses its ability to regulate emotions. The reasons behind the crying shift as the disease progresses: early-stage crying is often tied to grief or frustration, middle-stage crying may have no clear emotional trigger at all, and late-stage crying frequently signals physical pain or discomfort that the person can no longer put into words.
Why Crying Changes at Each Stage
In the early stage, a person with dementia still has significant awareness of what’s happening to them. Crying at this point usually reflects genuine sadness, anxiety, or frustration about memory loss and the changes it brings to daily life. This kind of crying makes emotional sense in context, and it typically responds to comfort and conversation the same way it would in anyone else.
In the middle stage, the picture changes. The brain’s ability to manage emotional responses starts to break down, and crying episodes may seem disproportionate to the situation or come out of nowhere. A person might sob uncontrollably over something minor, or cry without being able to explain why. This is sometimes called emotional lability, and it’s especially common in vascular dementia, where damage to small blood vessels in the brain disrupts the circuits that normally keep emotional expression in check. Depression, emotional lability, and apathy are all more common in vascular dementia than in Alzheimer’s disease.
In the late stage, when verbal communication has largely disappeared, crying often becomes a way of signaling unmet physical needs. Pain, constipation, hunger, cold, or a urinary tract infection can all trigger crying in someone who can no longer say “something hurts.” Mayo Clinic Health System notes that many late-stage dementia patients are left with only basic expressions of discomfort, including screaming, striking out, or crying, particularly when interacting with caregivers during tasks like bathing or repositioning.
Pseudobulbar Affect: Crying Without Sadness
One of the most confusing forms of crying in dementia is a neurological condition called pseudobulbar affect, or PBA. This causes sudden, uncontrollable episodes of crying (or sometimes laughter) that don’t match what the person is actually feeling. Someone with PBA might burst into tears during a calm conversation, or laugh during a serious moment. The crying doesn’t bring emotional relief afterward, which distinguishes it from normal sadness.
An estimated 1.8 to 7.1 million Americans have experienced PBA at some point, but fewer than half of those who report symptoms to a doctor ever receive a diagnosis or treatment. PBA is caused by damage to the brain pathways that control emotional expression, not by depression, although the two can look similar from the outside. The key difference is that PBA episodes are brief, intense, and feel involuntary to the person experiencing them, while depressive crying tends to be sustained and connected to a low mood that persists between episodes.
When Crying Signals a Medical Problem
A sudden increase in crying, especially in someone whose behavior has been relatively stable, should raise a red flag. The UCSF Memory and Aging Center identifies urinary tract infections, pneumonia, constipation, dehydration, and poor sleep as common causes of sudden behavioral changes in people with dementia. These conditions can trigger delirium, a state of acute confusion that layers on top of the existing dementia and can make a person far more distressed, tearful, or agitated than usual.
Because people in the middle and late stages often can’t describe symptoms like burning during urination or abdominal pain, a new pattern of crying or inconsolable distress is sometimes the only visible sign that something medical is going on. If a person with dementia becomes inconsolable and the crying feels different from their usual behavior, ruling out an underlying physical cause is the most important first step.
Sundowning and Time-of-Day Patterns
Many caregivers notice that crying and agitation peak in the late afternoon or early evening. This pattern is called sundowning, and it’s one of the most common behavioral features of middle-stage dementia. According to the National Institute on Aging, sundowning involves a cluster of symptoms including restlessness, irritability, confusion, and emotional distress that worsen as daylight fades. The exact cause isn’t fully understood, but fatigue, disrupted internal clocks, reduced lighting, and overstimulation throughout the day all seem to play a role.
If you notice that a loved one’s crying follows a late-afternoon pattern, adjusting the environment can help. Keeping lights bright as evening approaches, reducing noise and activity in the hours before sundown, and avoiding caffeine later in the day are all practical steps that can reduce the intensity of these episodes.
How Different Types of Dementia Affect Crying
The type of dementia matters. Vascular dementia, caused by reduced blood flow to the brain, is particularly associated with emotional lability and tearfulness. People with vascular dementia may be prone to mood swings and become unusually tearful or happy in ways that seem exaggerated compared to their personality before the illness.
Frontotemporal dementia, which primarily affects the front and side regions of the brain, presents differently. Early symptoms tend to include disinhibition, poor insight, and reduced emotional reactivity rather than increased crying. Research from the University of California, San Francisco found that people with frontotemporal dementia subtypes did not show impaired ability to express sadness in laboratory settings, but caregivers often observe a blunted quality to their emotional responses overall. In other words, frontotemporal dementia is more likely to reduce emotional expression than to amplify it, at least in the early and middle stages.
Alzheimer’s disease falls somewhere in between. Crying can occur at any stage, but it tends to become more prominent in the middle stage as emotional regulation declines and the person becomes less able to process frustration, confusion, or overstimulation.
Helping Someone Who Is Crying
The instinct to explain or reason with someone who has dementia is strong, but it rarely works. Detailed explanations about why everything is okay can actually increase confusion and distress. Instead, keeping your response simple and warm tends to be more effective. Short, comforting phrases, gentle eye contact, and a calm tone of voice go further than logic.
Sometimes the most helpful thing you can do is sit quietly beside the person without saying anything at all. Silence gives them space to process whatever they’re feeling without the added demand of following a conversation. Offering a simple choice, like “Would you like to go for a short walk?” can redirect attention without feeling confrontational. Physical comfort, such as holding a hand or placing a blanket around their shoulders, provides reassurance that doesn’t depend on language.
For PBA specifically, a combination of two medications (a cough suppressant and a heart rhythm drug, taken together at low doses) has shown the strongest evidence of effectiveness. A class of antidepressants known as SSRIs has also demonstrated some benefit for emotional distress and agitation in dementia more broadly, though evidence is still limited for recommending one specific medication over another. These are conversations worth having with a doctor if crying episodes are frequent, distressing, or interfering with the person’s quality of life.