Urinary Tract Infection: How to Tell the Serious from the Simple and What to Do

What is a urinary tract infection and where does it happen?

A urinary tract infection (UTI) is a bacterial infection anywhere in the urinary system, which includes the kidneys, ureters, bladder and urethra. The most common culprit is Escherichia coli, a bacterium that normally lives in the gut and travels to the urethra from the surrounding area. It is responsible for more than eighty percent of UTIs in women.

Women are far more susceptible than men because their urethra is much shorter, giving bacteria a shorter route to the bladder. At least half of all women will have at least one UTI in their lifetime, and a significant proportion will have repeated infections. Men do get UTIs, but less commonly, and when they do it usually warrants additional investigation for an underlying cause such as prostate enlargement or urethral stricture.

The infection is classified by where it sits: cystitis affects the lower tract (bladder and urethra) and is the more common and less dangerous form, while pyelonephritis reaches the kidneys and can become serious if not treated promptly.

What symptoms should you watch for?

Cystitis presents with burning or pain on urination, a frequent and urgent need to urinate with only small amounts passed each time, and urine that is cloudy, smells strongly, or contains traces of blood. Many women also feel a dull pressure or heaviness in the lower abdomen. In otherwise healthy adults, these symptoms are uncomfortable but not dangerous, and most people recover well with a short antibiotic course.

Pyelonephritis looks different. Fever above 38.5 degrees Celsius comes on, accompanied by chills, nausea and sometimes vomiting, and a distinct pain in one or both flanks just below the rib cage. This pattern means the infection has climbed to the kidneys and requires a medical assessment on the same day. Waiting for an appointment in two days is not appropriate.

In children under two and in elderly people, symptoms can be entirely atypical. A young child may have a fever with no urinary complaints at all. An older person may present with confusion or sudden behavioural change rather than pain. If an elderly patient develops unexplained acute confusion, checking a urine sample is a standard early step.

How is it diagnosed: dipstick versus urine culture?

A urine dipstick is a quick bedside test that detects signs of infection: white blood cells (leukocyte esterase) and the nitrites that gram-negative bacteria such as E. coli produce. A positive dipstick in someone with clear symptoms is enough to start treatment in many straightforward cases. The test takes two minutes and is available in most pharmacies and clinics.

A urine culture (urine culture and sensitivity) goes further: it identifies the exact bacterium and tests it against a panel of antibiotics to show which ones will and which ones will not work. Results take one to three days. The 2024 European Association of Urology guidelines specify that a culture is essential for pregnant women, men, children, anyone with recurrent infections, and anyone who does not improve on their first antibiotic course. This is particularly important in the region because resistance rates are rising and the default antibiotic a pharmacist might hand over may no longer be effective against the specific strain involved.

How the urine sample is collected matters enormously for an accurate result. The sample must come from the midstream of urination, meaning you start urinating into the toilet for a couple of seconds, then catch the middle portion in the sample cup, then finish into the toilet. A sample collected carelessly, especially in women, can become contaminated with skin bacteria and produce a false positive or mislead the laboratory about which organism is truly causing the infection.

How is a UTI treated?

Antibiotics are the definitive treatment. Which antibiotic and for how long depends on the infection location, the patient's circumstances, and the local resistance pattern. For straightforward cystitis in a young non-pregnant woman, a three to seven day oral course is standard. Pyelonephritis needs a longer course of seven to fourteen days, and patients who are vomiting and cannot keep medication down, or who are very unwell, will need hospital admission for intravenous antibiotics.

Finishing the full prescribed course is important even when symptoms resolve in the first day or two. Stopping early leaves a small surviving population of bacteria that may have slightly more resistance, and these can multiply and cause a relapse that is harder to treat. This is not the same as taking antibiotics for longer than necessary, which carries its own risks.

Pain relief alongside antibiotics helps in the first day or two. Paracetamol is effective and safe for most people. Increasing fluid intake helps flush bacteria from the bladder and reduces the concentration of urine, which in itself reduces irritation. There are also urinary anaesthetic preparations that reduce the burning sensation while antibiotics take effect.

Why self-medicating without a test is causing a real problem

In many countries across the region, antibiotics are dispensed by pharmacists without a prescription. Women who recognise the familiar burning sensation often ask for the same antibiotic they used last time and self-treat without a urine test. This pattern creates two problems: first, not every episode of urinary burning is a bacterial UTI, and unnecessary antibiotics cause harm without benefit; second, repeated use of the same antibiotic selects for resistant bacteria.

A 2025 study published in PloS One examining women in the UAE found widespread self-medication and gaps in accurate knowledge about prevention and appropriate treatment. Similar patterns have been reported across Jordan, Egypt and other countries in the region. The practical consequence is that resistance rates to the antibiotics most commonly dispensed over the counter, particularly ampicillin and co-trimoxazole, have risen substantially in regional E. coli isolates.

A urine dipstick test, which takes minutes and costs very little, should ideally come before any antibiotic. Some pharmacies in the region are able to perform this. If you genuinely cannot access any test, a short course of an antibiotic recommended by a knowledgeable pharmacist is a pragmatic choice for a first episode of classic symptoms, but if the symptoms do not clear or return within a month, a urine culture before the next antibiotic course is not optional.

Who is at higher risk and why?

Pregnant women are a special group: asymptomatic bacteriuria, which is bacteria in the urine with no symptoms whatsoever, is routinely screened for and treated in pregnancy because it carries a real risk of progressing to pyelonephritis and triggering preterm labour. A 2024 study of pregnant Jordanian women published in BMC Pregnancy and Childbirth confirmed significant associations between hygiene practices and UTI rates, reinforcing the importance of routine urine screening at antenatal visits.

People with diabetes are substantially more vulnerable. High glucose in the urine creates an ideal medium for bacterial growth, and the immune impairment that accompanies poorly controlled diabetes makes infections more severe and harder to clear. People with urinary catheters, kidney stones, or structural abnormalities of the urinary tract also have consistently higher rates.

Children under two years with unexplained fever should always have a urine sample checked, because UTI is a common cause and can be missed when there are no obvious urinary symptoms. Repeated UTIs in a child warrant imaging of the urinary tract to look for reflux, where urine flows backwards from the bladder toward the kidney.

How to prevent urinary tract infections

Adequate fluid intake is the single most reliably effective preventive measure. Keeping well hydrated dilutes the bacterial concentration in the bladder and increases the frequency of urination, which mechanically clears bacteria before they can establish themselves. Avoiding holding urine for long periods, particularly common during long work shifts or when clean toilets are not available, reduces bacterial dwell time in the bladder.

Women should always wipe front to back after using the bathroom, which prevents faecal bacteria from reaching the urethral opening. Urinating shortly after sexual intercourse reduces the chance of any bacteria that entered the urethra during intercourse from reaching the bladder. Cotton underwear is preferable to synthetic fabrics that retain moisture, and heavily scented soaps or genital hygiene products can disturb the protective bacterial flora of the area.

Cranberry products, widely sold as UTI prevention, have some evidence in women who experience recurrent infections but the effect is modest and they do not treat an active infection. Women with more than two UTIs in six months should have a conversation with a doctor about whether a low-dose antibiotic taken preventively after intercourse, or continuously for a defined period, is appropriate.

When do you need a specialist?

Most straightforward UTIs are handled well in primary care. Referral to a urologist becomes appropriate for recurrent infections with no clear preventable cause, for any UTI in a man, for UTIs in children that recur, and when imaging is needed to exclude stones or structural problems. A plain ultrasound of the kidneys and bladder is a reasonable first-line imaging test that is widely available in the region and does not involve radiation.

A post-void residual measurement, checking how much urine remains in the bladder after urination, is a simple way to screen for incomplete bladder emptying, which can be caused by prostate enlargement in men or pelvic floor dysfunction in women. Residual urine sitting in the bladder provides bacteria with a stable environment to grow and explains why some people keep getting infections despite treatment.

If a patient with pyelonephritis cannot tolerate oral antibiotics due to vomiting, or does not improve clinically within 48 hours of starting oral treatment, hospital admission for intravenous antibiotics is the appropriate step rather than switching to a different oral antibiotic and waiting longer.

Bladder pain that is not an infection: a common source of confusion

Some women experience burning, urgency and pelvic pressure that feels identical to a UTI, yet repeated urine tests come back completely clear. This condition is called interstitial cystitis or bladder pain syndrome, and it is a chronic inflammatory condition unrelated to bacterial infection. Repeated antibiotic courses for this problem bring no benefit and worsen overall antibiotic resistance.

The distinguishing features are that the pain often persists between urinations and is not just triggered by urination itself, symptoms have been present for months with multiple negative cultures, and sometimes certain foods or stress worsen it. If this pattern fits your experience, it is worth describing it explicitly to your doctor, because the diagnosis will change the direction of management entirely.

Correct diagnosis, even when it means sitting with the uncertainty of a non-bacterial cause, protects you from unnecessary medication exposure and preserves the effectiveness of the antibiotics you may genuinely need in the future.

Sources

• Hatamleh R, Al-Trad A, Abuhammad S et al: Urinary tract infection among pregnant Jordanian women: role of hygiene and sexual practices, BMC pregnancy and childbirth, 2024
• Alhaj SS, Allami S, Mohamadiyeh A et al: Knowledge, attitudes, and practices regarding urinary tract infections among women in the United Arab Emirates, PloS one, 2025
• Kranz J, Bartoletti R, Bruyere F et al: European Association of Urology Guidelines on Urological Infections: Summary of the 2024 Guidelines, European urology, 2024
• Al Lawati H, Blair BM, Larnard J et al: Urinary Tract Infections: Core Curriculum 2024, American journal of kidney diseases, 2024
• Behzad D, Hakimeh A, Hossein R et al: A middle east systematic review and meta-analysis of bacterial urinary tract infection among renal transplant recipients; Causative microorganisms, Microbial pathogenesis, 2020
• Nicolle LE, Gupta K, Bradley SF et al: Clinical Practice Guideline for the Management of Asymptomatic Bacteriuria: 2019 Update by the Infectious Diseases Society of America, Clinical infectious diseases, 2019