About this condition
A urinary tract infection (UTI) can affect the bladder or upper urinary tract. Some children have painful or frequent urination, while infants may only show fever or poor feeding. Prompt assessment matters because symptoms vary with age.
What matters most
Doctors ask about fever, pain, toilet habits, previous infections and the child’s general condition. Infants and young children cannot always describe urinary discomfort; a fever without an obvious source can be relevant.
Symptoms and situations to watch
Typical symptoms include burning on urination, frequent or urgent trips to the toilet, abdominal discomfort, new wetting, fever, vomiting or back pain. A baby may be irritable, feed poorly or become unusually sleepy without obvious urinary symptoms.
Important distinctions
A lower UTI is not the same as infection involving the kidneys. Fever, flank pain, repeated vomiting or significant lethargy raise concern for a more serious infection. The finding of bacteria without symptoms is interpreted separately and is not automatically treated as a symptomatic UTI.
How clinicians assess the problem
Diagnosis uses the clinical picture and a suitable urine sample, collected with age-appropriate technique. A urine culture may be recommended, particularly for infants or complicated presentations. Ultrasound is decided by age, course and medical indications, not automatically for every first infection.
Care and limitations
Treatment depends on age, severity and results, and may require a clinician-prescribed antibiotic. Do not start leftover antibiotics or assume that increased fluids alone treats a bacterial infection. Follow-up is individual, particularly after recurrent episodes.
When emergency help is needed
An infant younger than three months with suspected UTI requires immediate paediatric assessment. Call 103 or 112 for severe lethargy, reduced consciousness, suspected sepsis or marked dehydration; a febrile unwell child should not wait for a routine appointment.
Related information
Recurrent urinary tract infections in children; Pyelonephritis in children; Cystitis in children; Blood in a child’s urine.
Signs and symptoms
Typical symptoms include burning on urination, frequent or urgent trips to the toilet, abdominal discomfort, new wetting, fever, vomiting or back pain. A baby may be irritable, feed poorly or become unusually sleepy without obvious urinary symptoms.
Diagnosis and tests
Diagnosis uses the clinical picture and a suitable urine sample, collected with age-appropriate technique. A urine culture may be recommended, particularly for infants or complicated presentations. Ultrasound is decided by age, course and medical indications, not automatically for every first infection.
Care and treatment approaches
Treatment depends on age, severity and results, and may require a clinician-prescribed antibiotic. Do not start leftover antibiotics or assume that increased fluids alone treats a bacterial infection. Follow-up is individual, particularly after recurrent episodes.
When to seek urgent care
An infant younger than three months with suspected UTI requires immediate paediatric assessment. Call 103 or 112 for severe lethargy, reduced consciousness, suspected sepsis or marked dehydration; a febrile unwell child should not wait for a routine appointment.
Frequently asked questions
Can a child have a UTI without painful urination?
Yes. Infants and young children may show fever, poor feeding or lethargy without being able to report pain.
Does every child need a urine culture?
The need is based on age, findings and severity. The clinician selects urine tests and collection technique for the situation.
Does a first UTI prove a structural kidney problem?
No. Further imaging is considered for specific indications rather than assumed necessary for every uncomplicated episode.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
