Senior living & memory care

When Bladder and Bowel Control Slip Away

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The question behind this one is usually not academic. Something has changed at home, and a family is trying to work out whether it means the disease has moved. This page places bladder and bowel changes on the two staging scales clinicians actually use, explains why the mechanics of toileting fail before continence does, and covers what the change tends to alter about care.

Last updated: July 2026

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What stage of dementia is incontinence?

Stage 6 — the moderate-to-severe part of the disease, and not the last stage. The FAST scale divides functional decline in Alzheimer's dementia into seven major stages, with stages 6 and 7 broken into lettered substages 1. Stage 6 works through dressing, then bathing, then the mechanics of toileting, and only then reaches the loss of urinary control at 6d and the loss of bowel control at 6e 1.

FAST stands for Functional Assessment Staging — a scale that stages dementia by what a person can still do, rather than by a test score.

The federal description of Alzheimer's runs on a coarser grid and says the same thing in different words: the disease moves through preclinical, mild, moderate, and severe stages, with the moderate stage bringing greater supervision needs and the severe stage bringing full dependence on others for care 2. Continence sits inside that moderate-to-severe transition.

Stage 4 on the same scale sits a long way back from here, at complex tasks — the planning and money handling that tend to go first 1. Families who find themselves reading about fast stage 4 and about continence in the same week are usually looking at two different people's diseases, or at a single disease across several years.

Why the bathroom stops working before the bladder does

The substage immediately before incontinence on the FAST scale is the mechanics of toileting 1. That ordering carries a practical message that gets missed: the first accidents in dementia are often not a bladder problem at all. They are a wayfinding problem, a clothing problem, a sequencing problem, or a not-recognising-the-door-in-the-dark problem.

On the FAST scale, losing the mechanics of toileting comes before losing continence 1 — which means the earliest accidents may have a fixable cause.

What many families change first has nothing to do with medicine:

  • The bathroom door stays open, with the light on, so the room announces itself.
  • A toilet seat in a colour that contrasts with the floor and the bowl becomes findable again.
  • Trousers with an elastic waist replace buttons and belts that now take too long.
  • Trips get offered on a rhythm rather than waited for, because the request may no longer arrive in words.
  • The path from bed to bathroom gets cleared of rugs and furniture and given a night light.

None of that reverses fast stage 6. It does buy back the months in which the problem is still logistics rather than physiology, and those months are worth having.

When new incontinence is not the dementia

Staging answers a question about pattern. It does not answer a question about cause, and the two get confused most often when the change arrives quickly. Someone who was continent last month and is not this week has had a change that the slow arc of a degenerative disease does not, by itself, account for. That is a conversation to open with a clinician rather than a stage to accept quietly.

Asking whether something else is going on is not denial about the diagnosis. It is ordinary medicine.

Questions worth putting in front of the clinician, in roughly this order:

  • What has changed on the medication list in the past few weeks?
  • Could there be an infection, and how would we know without guessing?
  • Is constipation part of the picture?
  • Has walking, balance, or vision changed, so that the distance to the bathroom is now the real obstacle?
  • Is anything hurting, in someone who may no longer report pain in sentences?

The answer may turn out to be the dementia after all. Asking costs one appointment; not asking can cost a treatable problem several months of being missed.

The two staging scales, and why they differ on detail

Two related instruments are in circulation, and families often meet both without being told they are different. The Global Deterioration Scale, published in 1982, describes primary degenerative dementia across seven stages 3. The FAST scale shares that seven-stage spine and adds the lettered substages inside stages 6 and 7 1, which is what makes it precise enough to describe a change in toileting rather than a change in a whole year.

That difference explains a common confusion. A clinic that works in Reisberg staging may say stage 6 and mean a broad band of the disease, while a hospice assessment using the substages may say 6d or 7a and mean something quite specific. Both are talking about the same person.

Dementia staging is a description of function, not a measurement taken from the brain. Two experienced clinicians can land half a step apart on the same afternoon, particularly when the day-to-day detail comes from different people. A stage is best read as a band, and as a shorthand for a conversation rather than a replacement for one.

What tends to change about care once continence goes

Continence is one of the hinges in dementia care, because it changes the arithmetic of a night. Help with toileting cannot be scheduled the way meals can, and it usually cannot be given from another room. Federal guidance marks the moderate stage as the point of greater supervision needs, and the severe stage as full dependence on others for care 2. Households often meet the practical version of that sentence before they meet the words.

An estimated 6.9 million Americans age 65 and older were living with Alzheimer's dementia in 2024 4.

The same report counts the unpaid caregiving behind that number, most of it done by families 4. It is worth knowing, at the point where a night has stopped being a night, that this is an enormously common place to be rather than a private failure.

Mobility usually becomes the next question. The FAST substages of stage 7 track the narrowing of speech and then the loss of walking 1, so dementia mobility decline is the chapter that tends to follow this one — a useful thing to know before a bathroom two floors from a bedroom becomes the binding constraint.

Where incontinence sits in the memory-care and hospice conversations

Incontinence on its own does not make someone hospice-eligible. The FAST scale is the tool used in dementia hospice eligibility, and the markers that carry weight there are the stage 7 ones, not the stage 6 substages where continence is lost 1. A family told that a parent qualifies because of incontinence is being told something the scale does not say, and it is fair to ask which specific findings the assessment relied on.

Memory care criteria are a different matter and are set by each setting and each state rather than by the FAST scale. Continence support is one of the services most likely to sit in a separate fee tier, so the question to ask about any setting is not whether it provides the help but how the help is priced, staffed overnight, and reassessed when needs change.

The method for checking a setting is public. Medicare publishes a visit checklist of questions to ask and things to observe on a tour, covering rooms, activities, safety, staffing, and dementia care specifically 5. Reading it before the visit converts a sales tour into an inspection, and it works better than any list of names — because the checklist keeps working next year, when the staffing has turned over.

What makes this easier to live with

Federal caregiver guidance is unusually direct on this point: dementia caregiving is demanding, it produces discouragement, frustration, and anger in people who are doing it well, and self-care plus outside help — family, respite, home health, support groups — reduces the burden 6. That is written down in government guidance precisely because so many caregivers assume the strain is a personal shortcoming.

A few things help in the room. Keeping the language neutral, because shame does not improve continence and does reliably make someone hide the evidence. Handling the laundry without commentary. Treating the accident as a fact of the day rather than an event. The person is not doing this on purpose, and in the moderate stage they may be unable to explain what went wrong even while knowing that something did.

A few things help outside it. Bringing a written record to the appointment — times, drinks, medication changes, what was happening just before — turns a vague report into something a clinician can work with. Asking whether a nurse or occupational therapist can look at the practical side is also reasonable; the room, the clothing, and the route are their trade, not an afterthought.

Common questions

No. On the FAST scale, loss of urinary and then bowel control sits inside stage 6, while stage 7 covers the narrowing of speech and the loss of walking, sitting, and holding the head up. Incontinence marks the moderate-to-severe transition. It is a significant change, and it is not the last one.

The dementia itself does not reverse, but the pattern sometimes improves when a separate cause is found and dealt with, or when the route, the clothing, and the lighting are changed so the bathroom becomes findable again. That is the practical reason a sudden change is worth investigating rather than filed under the diagnosis.

On the FAST scale, bowel control is lost after bladder control, so it sits slightly later in the same stage rather than signalling a different problem. It is not a separate diagnosis and it does not skip anyone to a later stage. It usually does change how much hands-on help each day requires.

Not by itself. Hospice assessments in dementia lean on the stage 7 markers of the FAST scale rather than the stage 6 substages where continence is lost. If hospice has been raised, asking which specific findings the assessment rested on is a reasonable question, and the answer should be more detailed than one word.

A few days of plain notes usually help more than a description: when accidents happened, what was going on just beforehand, how much was being drunk and when, whether bowels have been moving, and every medication change in recent weeks including anything bought over the counter. Clinicians can work with that. They struggle with a summary.

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When a change in continence needs a same-day call

  • Incontinence that begins abruptly over a day or two, especially with fever, shaking chills, or confusion clearly beyond the person's usual baseline
  • Blood in the urine, or urine that has turned cloudy and strong-smelling alongside pain or discomfort on passing it
  • No urine passed at all for many hours, with a hard, swollen lower abdomen or evident distress from a full bladder
  • New leg weakness, numbness in the saddle area between the legs, or loss of bowel control arriving together with back pain

New leg weakness, numbness between the legs, and loss of bowel control appearing together is an emergency-department visit the same day, not a wait for the next appointment. Call 911 if the person cannot be roused to normal alertness, or has become confused within a matter of hours.

This page explains how dementia staging scales describe changes in continence. It is not a diagnosis, not a substitute for the clinician who knows the person, and not a basis for changing any treatment.

References

  1. 1.Reisberg B (1988). Functional Assessment Staging (FAST). Psychopharmacology Bulletin. PMID 3249767The FAST scale's structure and content: seven major stages of functional decline in Alzheimer's dementia, with lettered substages within stages 6 and 7; the placement of loss of urinary control and then bowel control within the stage 6 substages, after the mechanics of toileting; stage 4 as the complex-task substage; the stage 7 substages covering narrowing speech and loss of ambulation; and the scale's use in dementia hospice eligibility via its stage 7 markers.
  2. 2.National Institute on Aging (NIH) (2024). What Are the Signs of Alzheimer's Disease?. National Institute on Aging (NIH). linkThat Alzheimer's typically progresses through preclinical, mild, moderate, and severe stages, that the moderate stage brings greater supervision needs, and that the severe stage brings full dependence on others for care.
  3. 3.Reisberg B, Ferris SH, de Leon MJ, Crook T (1982). The Global Deterioration Scale for assessment of primary degenerative dementia. American Journal of Psychiatry. doi:10.1176/ajp.139.9.1136The existence, origin, and seven-stage structure of the Global Deterioration Scale for staging primary degenerative dementia, as the companion staging framework families meet alongside FAST.
  4. 4.Alzheimer's Association (2024). 2024 Alzheimer's disease facts and figures. Alzheimer's & Dementia (journal of the Alzheimer's Association). doi:10.1002/alz.13809The estimate that 6.9 million Americans age 65 and older were living with Alzheimer's dementia in 2024, and that the report also accounts for the unpaid caregiving hours behind that figure.
  5. 5.Centers for Medicare & Medicaid Services (2022). Questions to Ask When You Visit a Nursing Home (Nursing home checklist). Medicare.gov / CMS Publication 12130. linkThat Medicare publishes an official visit checklist of questions to ask and items to observe on a tour, covering rooms, activities, safety, staff, and dementia care.
  6. 6.National Institute on Aging (NIH) (2023). Alzheimer's Caregiving: Caring for Yourself. National Institute on Aging (NIH). linkFederal guidance that dementia caregiving is demanding and can produce discouragement, frustration, and anger, and that self-care and outside help — family, respite, home health, and support groups — reduce caregiver burden.

6 sources, numbered by first appearance. General health information, not medical advice. AI-assisted editorial content — citations link their sources. Editorial policy