The Truth About UTI’s in Individuals with Alzheimer’s or Dementia

Written by Larea Mcqueen

Hi, I’m Larea, a Registered Nurse, Faith Community Nurse, and Certified in Dementia Care with 30 years of experience supporting families living with Alzheimer’s and other dementias. Both of my parents have Dementia, so I understand the journey personally as well as professionally. My heart is in helping family caregivers feel supported, prepared, and confident every step of the way.

Last updated July 6, 2025

Urinary Tract Infections (UTIs) are common, but they can have a very different impact on individuals with Alzheimer’s or dementia. As caregivers, it’s important to be aware of how UTIs might present themselves in our loved ones, especially since the usual symptoms we would look for—like pain or burning during urination—can be masked by dementia. In fact, even subtle changes in behavior or cognition could signal a UTI in someone with Alzheimer’s. Today, I’m sharing some important information about UTIs and how to recognize them, including my personal experience caring for my mother, who has had two UTIs.

What is a UTI?

A Urinary Tract Infection (UTI) is an infection that affects any part of the urinary system, including the kidneys, bladder, or urethra. UTIs are common, especially in older adults, and can often be treated with antibiotics. However, when someone has dementia, a UTI can become harder to detect and may lead to more serious health complications if left untreated. People with dementia are at a higher risk due to factors like difficulty expressing discomfort, reduced mobility, and a weakened immune system.

Why Are Women More Likely to Get UTI’s?

Women are more likely to develop UTIs than men due to several anatomical reasons. The female urethra is shorter than the male urethra, which makes it easier for bacteria to travel up into the urinary system. Additionally, women’s urethras are located closer to the anus, increasing the likelihood of bacteria from the bowel entering the urinary tract. Other factors, such as hormonal changes after menopause, can also affect the urinary tract and make women more susceptible to infections.

In the case of older women, factors like reduced mobility, incontinence, or chronic medical conditions like diabetes can also increase the risk of developing UTIs. Since women generally experience a higher incidence of UTIs, caregivers must be especially vigilant when it comes to monitoring for symptoms, especially in those with dementia, who may have difficulty expressing discomfort. Learn more about the Urinary system and common problems HERE.

Symptoms of UTI’s in People with Alzheimer’s or Dementia

In general, common symptoms of a UTI include frequent urination, discomfort while urinating, and foul-smelling urine. However, in individuals with Alzheimer’s or dementia, these symptoms might not be present in the usual way. Instead, caregivers may notice subtle behavioral or cognitive changes, such as:

  • Increased confusion or disorientation
  • Agitation or mood swings
  • Sudden changes in behavior, like becoming withdrawn or restless
  • A marked increase in tiredness, or acting unusually lethargic

For example, my mother, who has dementia, had two UTIs in the past year. The only symptoms she showed were being more tired, achy, and unusually confused. She didn’t have any of the classic UTI symptoms and these subtle symptoms could have easily been overlooked. 

Why UTIs Are Often Misdiagnosed in Dementia Patients

One of the challenges of caring for someone with dementia is that many of the symptoms of a UTI overlap with common dementia-related behaviors. A sudden increase in confusion, agitation, or changes in mood might be interpreted as a natural progression of dementia rather than a potential infection. Additionally, people with dementia often have trouble communicating physical symptoms like pain or discomfort, which makes it even harder for caregivers to recognize the problem.

Years ago, as a nurse working in nursing homes, I learned very early on that the first thing you should do when any elderly person becomes confused is check for a UTI. This is especially important when caring for individuals with Alzheimer’s or dementia. Over the years, I saw how their demeanor would often change when they had a UTI. They would become more agitated, sometimes downright mean, or exhibit behaviors that were completely out of character. Recognizing this shift and acting quickly could make a huge difference in their recovery and comfort.

With my mother, who has early-stage Alzheimer’s, I knew the signs to look for. As soon as I saw the increased tiredness, weakness, and confusion, I immediately suspected a UTI. Even though the symptoms didn’t match the typical UTI signs, I knew from my experience that any sudden shift in behavior, especially confusion, could be an infection rather than just a symptom of her dementia.

How UTI’s Can Affect Alzheimer’s and Dementia Progression

When left untreated, UTIs can worsen cognitive function and overall health in individuals with dementia. UTIs can lead to delirium, a sudden change in mental status that’s often mistaken for a worsening of dementia. Untreated infections can also lead to more serious complications, such as kidney infections or sepsis.

For my mom, when the UTI was diagnosed, she seemed to spiral into a more confused and disoriented state. We worried that this could mean her dementia was worsening. Thankfully, with the right treatment, the confusion cleared up, and she returned to her baseline. However, this experience reminded me just how much a simple infection could have a severe impact on someone with dementia.

Preventing UTI’s in People with Alzheimer’s or Dementia

Prevention is always better than treatment, and there are several strategies caregivers can use to reduce the risk of UTIs in those with dementia:

  • Hydration: Encourage your loved one to drink plenty of fluids. Dehydration increases the risk of UTIs.
  • Proper Hygiene: Help with wiping from front to back to avoid bacteria transfer, and ensure proper personal hygiene, especially for those who are incontinent.
  • Regular Bathroom Routines: If possible, establish a regular schedule for bathroom trips to ensure they’re urinating regularly.
  • Breathable Clothing: Avoid tight clothing or synthetic materials that trap moisture and can contribute to UTIs.

Monitoring for early signs, such as increased confusion or agitation, can also help catch a UTI before it gets too severe.

Treatment of UTI’s in Individuals with Alzheimer’s or Dementia

When UTIs are identified in dementia patients, treatment typically involves antibiotics. However, caregivers should be mindful that antibiotics may cause side effects, such as gastrointestinal distress (e.g., nausea, diarrhea) or an allergic reaction. It’s essential to monitor your loved one closely after starting treatment to ensure there are no adverse reactions.

One important consideration when taking antibiotics is the use of probiotics. Antibiotics, while effective at killing harmful bacteria causing the infection, can also destroy beneficial bacteria in the gut. This disruption of the gut microbiome can lead to digestive issues, such as diarrhea, bloating, or yeast infections. Probiotics, which contain live beneficial bacteria, can help restore the balance of healthy bacteria in the gut, making digestion more comfortable and preventing some of these side effects.

However, it’s important not to take probiotics at the same time as antibiotics. This is because antibiotics can kill the probiotics before they have a chance to settle in the gut and provide their benefits. A good rule of thumb is to take probiotics a few hours after the antibiotic dose, typically at least 2-3 hours apart. This timing allows the antibiotics to work on the infection, while giving the probiotics time to replenish the good bacteria in the digestive system.

In my mom’s case, once she was prescribed antibiotics, we made sure she took them as directed and kept an eye on her behavior to ensure there were no adverse reactions. We also introduced probiotics to help minimize any digestive side effects, and we were careful to time them properly, ensuring they were taken separately from her antibiotics.

When to Seek Medical Attention

Caregivers should always consult a doctor if they notice any of the following signs:

  • Increased confusion or delirium
  • Sudden changes in behavior, like aggression or withdrawal
  • Complaints of pain (even if they can’t verbalize it)
  • Sudden lethargy or tiredness that doesn’t improve with rest

If you suspect a UTI, it’s crucial to get a urine test as soon as possible, especially if your loved one shows any of these changes.

Conclusion:

UTIs in individuals with dementia can be tricky to detect, but understanding the subtle signs and symptoms can make a huge difference in preventing complications. As caregivers, it’s essential to stay vigilant for changes in behavior, as they may indicate a UTI rather than a simple progression of dementia. With prompt treatment and the right preventive strategies, we can help protect our loved ones from the impact of UTIs and manage their overall health.

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Larea Mcqueen

Hi, I’m Larea, a Registered Nurse, Faith Community Nurse, and Certified in Dementia Care with 30 years of experience supporting families living with Alzheimer’s and other dementias. Both of my parents have Dementia, so I understand the journey personally as well as professionally. My heart is in helping family caregivers feel supported, prepared, and confident every step of the way.

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