Symptoms of Urinary Tract Infections in Children During the School Year

Urinary tract infections (UTIs) in children occur when bacteria multiply in the bladder or kidneys, leading to symptoms like fever, a burning sensation during urination, and a frequent need to go to the toilet. Especially during the autumn months when schools reopen, children may avoid using shared school toilets, hold their urine, or struggle to follow proper hygiene routines, which significantly increases the frequency of these infections. If not noticed and treated early, this condition can negatively affect kidney health. However, with careful observation by parents and the right guidance from a doctor, it can be easily managed.

• Unexplained high fever in babies is the most common first sign of an infection.
• In school-aged children, pain during urination and a sudden urge to go are typical.
• Holding urine for long periods at school and not drinking enough water are the biggest risk factors.
• Girls have a higher risk of infection due to having a shorter urethra.
• It is essential to use the antibiotics prescribed by the doctor until the course is completely finished.
• Recurrent infections can lead to problems that may affect kidney function in the future.

What is a Urinary Tract Infection in Children?

A urinary tract infection occurs when outside bacteria enter the kidneys, ureters, bladder, and urethra (urinary tract)—an area that should normally be completely sterile. These bacteria are usually Escherichia coli (E. coli), microorganisms naturally found in the intestinal flora and excreted through stool. When the infection is limited only to the bladder, it is called cystitis and presents a milder clinical picture. However, if the bacteria travel up the urinary tract and reach the kidneys, a more serious kidney infection called pyelonephritis develops, which may require hospitalization.

Due to their anatomical structure, the urinary tract (urethra) in girls is much shorter than in boys and closer to the anus. This physically makes it easier for bacteria to reach the bladder. For this reason, the risk of infection in girls over the age of one is significantly higher. However, infections are also frequently seen in uncircumcised baby boys under the age of one, as bacteria can accumulate under the foreskin. This condition, which is quite common in the community, heals rapidly with the correct antibiotic treatment. Properly managing infections experienced during childhood is of great value in preventing kidney damage that could emerge in later years.

Causes and Risk Factors

The reopening of schools in autumn completely changes children's daily eating and toilet routines. Leaving the hygienic and comfortable environment of their homes, children may hold their urine for hours, thinking that school toilets are crowded or inadequately cleaned. Urine sitting in the bladder for a long time creates an ideal environment for bacteria to multiply, much like a stagnant lake. Sometimes, this toilet-holding behaviour becomes much more pronounced in children experiencing school phobia and anxiety; because the child does not want to go to the toilet, they also avoid drinking water throughout the day. Insufficient fluid intake slows down the urine flow, making it difficult for bacteria to be flushed out of the body naturally.

Incorrect cleaning after using the toilet is one of the biggest physical risk factors. Especially in girls, the habit of wiping from back to front causes bacteria from the stool to be carried directly into the urinary tract. In addition, chronic constipation creates mechanical pressure on the urinary tract. A full and hardened bowel structure presses on the bladder neck, preventing the bladder from emptying completely, and the remaining urine paves the way for infection. Wearing tight, synthetic nylon underwear and staying in the bathtub for a long time with bubble bath gels also disrupts the flora of the genital area, supporting bacterial growth. Congenital kidney and urinary tract anomalies are also among the main causes of recurrent infections.

Symptoms in Babies and Children

The signs of the illness vary greatly depending on the child's age, their ability to express themselves, and which part of the urinary tract the infection affects. During the newborn and infancy periods, symptoms are usually very vague and may not directly point to the urinary tract.

UTI Symptoms in Babies

In babies, a urinary tract infection often manifests itself with a high fever where no other focus, such as a cough or a runny nose, can be found. In addition to fever, general complaints such as restlessness, continuous crying spells, refusing breast milk or formula, failure to gain weight, and vomiting are observed. While changing their nappy, you may notice that the urine smells much sharper and worse than usual, or that its colour has darkened. Sometimes, visible slight pinkness or spotting-style bleeding in the urine can also occur.

Symptoms in Toddlers and School-Aged Children

In children who have developed the ability to express themselves, a burning sensation during urination is the most frequently voiced complaint. The child may cry while using the toilet, say it hurts, or try to hold their urine by crossing their legs. Frequent urination, a sudden urge to go to the toilet, and wetting themselves drop by drop before reaching the toilet are very typical. A child who has previously completed toilet training successfully suddenly starting to wet themselves during the day or night is a strong sign. Pain in the lower abdomen or around the belly button may be seen. If the infection reaches the kidneys, this picture is accompanied by chills, high fever, severe lower back pain, nausea, and vomiting.

How is it Diagnosed at the Hospital?

When you visit the hospital suspecting your child has an infection, the doctor first performs a detailed physical examination and manually checks the abdomen and lower back. The first step for a definitive diagnosis is a complete urinalysis and a urine culture. Collecting the urine sample under the right conditions is critical for the reliability of the result. In children who have completed toilet training, midstream urine is collected in a sterile container, while for babies, adhesive urine bags are used after the genital area is cleaned with special solutions.

Since the risk of contamination from skin bacteria is high in samples collected with a bag, it may be necessary to take a sterile sample directly from the bladder using a thin catheter in suspicious cases or in babies with high fever. The presence of leukocytes (white blood cells), nitrites, and bacteria in the urinalysis indicates an infection. The urine culture determines which bacterium is causing the infection and which antibiotics this bacterium is sensitive to. Culture results usually take between 48 and 72 hours. In cases of febrile infections, a blood test is requested to check infection markers (CRP and hemogram) in the blood. In recurrent cases, urinary ultrasonography (USG) and, if necessary, a voiding cystourethrogram (VCUG) are performed to examine the structure of the kidneys.

Treatment Process and Home Care

Once the diagnosis is confirmed, your doctor will start an appropriate antibiotic treatment based on the child's age, weight, and the severity of the infection. Treatment usually lasts 3 to 7 days with oral medications in the form of syrup or pills. A broad-spectrum antibiotic may be started until the culture result is available; when the laboratory result arrives, a switch to a more specific medication is made if necessary. Using the medications completely for the duration specified by the doctor, even if the complaints disappear in the first two days, is essential to completely clear the bacteria and prevent the development of antibiotic resistance.

Ensuring the child drinks plenty of fluids is the most fundamental step in the home care process. Drinking water increases the amount of urine, making it easier for bacteria in the bladder to be mechanically washed out of the body. To relieve pain and fever, antipyretics containing paracetamol or ibuprofen recommended by your doctor can be used. Keeping the child's genital area clean and dry, and choosing loose-fitting cotton underwear will speed up the healing process. School-aged children should be told in a compassionate manner that they must not postpone their toilet needs and should definitely go to the toilet during breaks. Additionally, acidic drinks, caffeinated teas, and overly sugary fruit juices that can irritate the bladder should be avoided during this period.

Complications and Risk Groups

Infections that are not treated promptly and correctly can pave the way for permanent health problems in the future. Especially infections that reach the kidneys can cause scarring in the kidney tissue as they heal. Kidney scarring may not show symptoms during childhood but carries a risk of hypertension and kidney failure in adulthood. Frequent recurrent infections can disrupt the child's general health, leading to a loss of appetite and pauses in growth processes; you can also get information about the general effects of such chronic health problems from our guide titled how to understand developmental delay in children.

Vesicoureteral reflux (VUR), a condition where urine flows backward from the bladder to the kidneys, is one of the most serious risk factors. Children with this anatomical problem are in a high-risk group for kidney damage with every bladder infection. Furthermore, those with neurological bladder problems, congenital kidney stones, and children with weak immune systems are much more susceptible to complications. Children in these risk groups must be followed up at regular intervals by pediatric nephrology or pediatric urology specialists, and their kidney health must be secured with preventive low-dose antibiotic treatments or surgical interventions.

When to See a Doctor?

When you notice symptoms such as frequent urination or a burning sensation while urinating in your child, you should consult a pediatric specialist without wasting time. However, some symptoms may indicate that the infection has spread to the kidneys, entered the bloodstream, or caused fluid loss. Such situations require emergency medical intervention. When you observe the following warning signs, you should go to the emergency department of the nearest healthcare facility without waiting or call 112:

• If there is a fever of 38 degrees Celsius or higher in babies under three months old, or exceeding 39 degrees in older children, which cannot be brought down despite medication.
• If the child cannot keep any fluids down, including water, is constantly vomiting, and shows signs of severe dehydration, such as no tears when crying.
• If neurological signs such as confusion, excessive sleepiness, inability to wake up, slurred speech, or unresponsiveness to the surroundings appear.
• If there is a complaint of pain in the lower back, waist, or flanks severe enough to prevent the child from moving.
• If urine output has completely stopped or if there is heavy, clotted, dark red bleeding in the urine.

Since these symptoms can be harbingers of kidney failure or serious systemic blood infections called sepsis, they require hospitalization for intravenous fluid and antibiotic treatment.

The Process at BHT CLINIC İstanbul Tema Hastanesi

When it comes to your child's kidney and urinary tract health, rapid diagnosis and correct intervention are of great importance. In our Pediatrics department, the diagnosis and treatment of infections for patients of all age groups, from the newborn period to adolescence, are meticulously carried out by our experienced medical staff in physical areas suitable for child psychology. When you apply to our hospital, a detailed examination of your child is performed, and the necessary urine tests and ultrasonography examinations are rapidly concluded in our laboratories on the same day.

Outside of working hours, in emergencies such as a sudden high fever in the middle of the night or on weekends, our 24/7 pediatric emergency service offers uninterrupted medical support. When coming to the hospital, bringing your child's previous test results, a list of medications they use, and your fever tracking notes, if any, will speed up the medical process. With our early diagnosis and modern treatment approaches, we aim for your child to regain their health quickly without staying away from their school life and daily routine. For regular follow-ups and appointment procedures, you can contact us via our appointment page.

Frequently Asked Questions

Will a urinary tract infection in children go away on its own?

No, because it is a bacterial infection, it does not go away on its own. Appropriate antibiotic treatment must be administered under a doctor's supervision. Untreated infections carry the risk of spreading to the kidneys and leaving permanent damage.

Can a child with a urinary tract infection go to school?

Children whose fever has dropped, pain has decreased, and who feel well after starting antibiotic treatment can usually return to school after 24 to 48 hours. However, their teacher must be informed about their need to go to the toilet and drink plenty of water at school.

Why is it more common in girls?

In girls, the tube that carries urine out of the bladder (urethra) is shorter than in boys and is anatomically closer to the anus. This structure makes it much easier for bacteria from stool to reach the urinary tract.

How is a urine sample taken from my baby?

After the genital area is cleaned with special solutions in babies, adhesive sterile urine bags are attached. In emergencies with high fever or when results cannot be obtained with a bag, a sample can be taken directly from the bladder using a thin and soft catheter.

What should I do to prevent recurrent infections?

Ensure that your child drinks a sufficient amount of water daily, prevent them from holding their urine at school, and teach girls the habit of wiping from front to back. Additionally, if there is a constipation problem, support their diet with fibrous foods to ease their bowels.

This article is for informational purposes only; please be sure to consult your doctor for diagnosis and treatment.