When you care for someone close to you, a change in their health is hard to ignore. It is harder still when they can't tell you what's wrong or what's different.
A UTI in an older adult may not cause obvious urinary symptoms, or the person may be unable to explain what they feel. You may first notice a change in behavior, appetite, or daily functioning. Those changes can have several causes, so knowing what to watch for and when to get help can help you respond without assuming every change is a UTI.
Why UTIs Happen in Older Adults
A UTI often affects the bladder, but the infection can sometimes spread to the kidneys. That is why some signs need faster action than others.
Age raises the risk for specific reasons. A previous UTI increases the risk of another. A urinary catheter and trouble emptying the bladder also raise it.
UTI Symptoms in Older Adults
UTIs in older adults may cause familiar urinary symptoms, but sometimes the first signs are changes in behavior or daily functioning.
Symptoms That May Suggest a UTI
New urinary symptoms are useful clues, especially when several appear together. Look for changes from the person's usual pattern.
Pain or burning during urination. They may report discomfort, grimace, or become distressed when using/asked to use the bathroom.
Urgency or frequent urination. They may make more trips to the bathroom, rush to get there, or pass only small amounts.
Lower abdominal discomfort. They may report or exhibit pain or tenderness below the belly button.
New or worsening incontinence. New accidents may be a clue, particularly alongside other urinary symptoms.
Visible blood in the urine. Blood in the urine needs medical evaluation, even if there is no pain. Do not assume a UTI is the cause.
Cloudy or strong-smelling urine alone does not establish a UTI. Urine can change in appearance or smell for reasons unrelated to infection, and bacteria may be present without causing illness.
Other Changes That Need Attention
Confusion, falls, and changes in daily functioning can signal illness, but they do not specifically point to a UTI. Look for clear differences from the person’s usual behavior and abilities.
Confusion or unusual behavior. A sudden change in attention, awareness, or alertness may be a sign of delirium and needs prompt medical assessment. It often comes and goes through the day, and it can show up as withdrawal or unusual sleepiness rather than agitation.
Falls or reduced mobility. New unsteadiness or difficulty with everyday tasks deserves attention.
Reduced appetite or fluid intake. These changes can accompany illness or contribute to dehydration.
A clinician has to weigh other causes too, including medication effects, dehydration, and other acute illness. One systematic review found the evidence insufficient to link confusion with a UTI in the absence of fever. Confusion on its own, without urinary symptoms or other signs of infection, is not enough to blame an infection.
What Else Can Look Like a UTI?
Some conditions need treatment on their own, and others can occur alongside a UTI. Sudden or worsening symptoms should be assessed by a clinician rather than guessed at home.
Dehydration can contribute to weakness, dizziness, and confusion. It can also make urine more concentrated and darker, though urine color is an unreliable guide to hydration on its own.
Medication effects can affect alertness, balance, and bladder function, particularly after a new prescription or dose change.
Constipation or urinary retention can worsen bladder symptoms. Difficulty emptying the bladder can also increase the risk of urinary problems, and changes in bowel habits have causes of their own.
Other infections or illnesses can cause confusion, weakness, or a sudden decline in functioning.
Vaginal or genital irritation can cause burning or discomfort that resembles a UTI.
What to Do If You Suspect a UTI
Before calling, note when the changes began and whether they are worsening. Record urinary symptoms, pain, temperature, fluid intake, falls, bowel changes, and recent medication changes. If the person has dementia, describe specific differences from their usual behavior and abilities.
The clinician may examine the person, assess other causes, and order urine testing when appropriate. Results should be read alongside symptoms, not on their own.
Bacteria can be present in the urine without causing any symptoms, which is called asymptomatic bacteriuria. It is common in older adults and generally should not be treated with antibiotics. For someone with confusion or a fall but no urinary symptoms or other signs of infection, a positive test should not automatically lead to antibiotics. The clinician can use the symptoms and examination to decide whether treatment or monitoring is appropriate.
Ask the clinician:
- Do these symptoms suggest a UTI, or could something else be causing them?
- If bacteria are found, how will we know whether they explain the symptoms?
- If antibiotics are prescribed, when should symptoms improve, and what side effects should we watch for?
While you wait, monitor symptoms and alertness and offer fluids if the person can drink safely. Never use leftover antibiotics or someone else's prescription. If the person's symptoms worsen, seek care rather than waiting for the appointment.
Contact the clinician if symptoms do not improve as expected, return after treatment, or change. Repeated suspected UTIs deserve review to check whether each episode was really an infection.
