UTI Warning Signs: Symptoms, Treatment & When to See a Doctor

🩺 Urinary Tract Infection (UTI): Warning Signs, Causes and Treatment

Urinary tract infections (UTIs) are among the most common infections worldwide, affecting an estimated 150 million people each year. According to the NHS, UTIs are especially common in women, though men and travellers also frequently develop them.

The good news is that most uncomplicated UTIs can be diagnosed based on symptoms and treated effectively with a short course of antibiotics. If you're in Spain and think you may have a UTI, you can book an online consultation with UrgentDoc — our licensed doctors can assess your symptoms and send an e-prescription for UTI medication directly to your nearest pharmacy.

⚠️ Medical disclaimer: This article is for informational purposes only and does not replace professional medical advice, diagnosis or treatment. Always consult a qualified healthcare provider about your individual circumstances.

🔹 What Is a Urinary Tract Infection?

A urinary tract infection occurs when bacteria enter the urinary system — which includes the kidneys, ureters, bladder and urethra — and cause inflammation and infection.

The Mayo Clinic explains that most UTIs affect the lower urinary tract (the bladder and urethra). When the infection is limited to the bladder, it's called cystitis. If it spreads to the kidneys, it becomes pyelonephritis — a more serious condition requiring prompt treatment.

The most common cause is Escherichia coli (E. coli) bacteria, which normally live in the digestive system but can cause infection when they enter the urinary tract.

🔹 Common Symptoms of a UTI

The NHS lists the following common UTI symptoms:

Pain or burning sensation when urinating (dysuria)
Needing to urinate more often than usual, including during the night
Urgency — a sudden, strong need to urinate
Cloudy, dark or strong-smelling urine
Blood in the urine — pee may look pink, red or dark brown
Lower abdominal pain or pressure in the pelvic area
Feeling tired, weak or generally unwell
Low-grade fever or feeling hot and shivery

Symptoms that suggest the infection has spread to the kidneys

More serious symptoms that require urgent attention include:

High fever (above 38°C / 100.4°F) with chills or shivering
Pain in the lower back or sides, just below the ribs
Nausea or vomiting
Confusion or agitation (especially in older adults)

If you experience any kidney infection symptoms, seek medical attention immediately.

🔹 Who Gets UTIs? Risk Factors

UTIs can affect anyone, but certain factors increase the risk. The Mayo Clinic identifies these key risk factors:

Women

Women develop UTIs far more frequently than men because the female urethra is shorter, making it easier for bacteria to reach the bladder. Additional risk factors for women include:

Sexual activity (especially with new partners)
Certain types of contraception (diaphragms, spermicides)
Hormonal changes during menopause (reduced oestrogen affects the vaginal bacteria that protect against UTIs)
Pregnancy

Travellers

Travellers are at increased risk due to:

Dehydration — not drinking enough water, especially in hot climates like Spain
Changed toilet habits — holding urine for long periods on flights, bus trips or sightseeing
Unfamiliar hygiene conditions — limited access to clean toilets
Dietary changes — different food and drink can affect the urinary tract

Other risk factors

Diabetes or a weakened immune system
Kidney stones or urinary tract blockages
Use of a urinary catheter
Recent urinary tract procedures
Incomplete bladder emptying

🔹 How UTIs Are Diagnosed and Treated

Diagnosis

Most uncomplicated UTIs can be diagnosed based on your symptoms. A doctor will ask about:

When symptoms started and how severe they are
Whether you've had UTIs before
Any relevant medical conditions or medications
Whether you could be pregnant

In some cases, a urine sample may be requested to confirm the diagnosis and identify the specific bacteria causing the infection. This is more common for recurrent UTIs or complex cases.

Treatment

The NHS states that UTIs are usually treated with a short course of antibiotics — typically 3 days for women with a straightforward bladder infection. The most commonly prescribed antibiotics include:

Nitrofurantoin — typically taken for 3–5 days
Trimethoprim — typically taken for 3 days
Fosfomycin — a single-dose option

It's important to complete the full course of antibiotics, even if symptoms improve quickly.

If you're in Spain, UrgentDoc can prescribe appropriate UTI medication or antibiotics through an online consultation, with the e-prescription sent to any pharmacy in the country.

🔹 Home Remedies and Self-Care for UTIs

While antibiotics are usually needed to clear the infection, these self-care measures can help relieve symptoms:

Drink plenty of water — this helps flush bacteria from the urinary tract
Take paracetamol for pain relief
Avoid caffeine, alcohol and acidic drinks — these can irritate the bladder
Use a hot water bottle on your lower abdomen to ease discomfort
Avoid sexual intercourse until symptoms resolve

What about cranberry products?

Cranberry juice and supplements are often recommended for UTI prevention. The NHS notes that while some evidence suggests cranberry products may help prevent UTIs from recurring, there is no strong evidence they help treat an active infection.

🔹 How to Prevent UTIs

The NHS and Mayo Clinic recommend these prevention strategies:

Do:

Drink plenty of fluids, especially water
Wipe from front to back after using the toilet
Urinate as soon as possible after sexual intercourse
Wash the genital area with water before and after sex
Wear cotton underwear and loose-fitting clothes
Urinate when you feel the need — don't hold it in

Avoid:

Scented soaps, bubble baths or feminine hygiene sprays around the genital area
Tight-fitting underwear or trousers
Holding urine for long periods
Excessive consumption of caffeine, alcohol or sugary drinks
Using spermicide-coated condoms or diaphragms (consider alternative contraception methods)

🔹 When to See a Doctor About a UTI

You should seek medical advice if:

Your symptoms do not improve within 48 hours
You have a fever, back pain, nausea or vomiting (possible kidney infection)
You're pregnant
You're male — UTIs in men require assessment to rule out underlying causes
You've had multiple UTIs in the past 6 months (recurrent UTIs need investigation)
You have diabetes or a weakened immune system
You notice blood in your urine

Seek emergency care (call 112 in Spain) if you experience confusion, drowsiness, or difficulty speaking alongside UTI symptoms — this could indicate sepsis.

With UrgentDoc, you can get a UTI assessment online from anywhere in Spain. Our doctors can diagnose your symptoms and prescribe treatment without the need for a clinic visit.

❓ Frequently Asked Questions

Can a UTI go away on its own without antibiotics?

Some very mild UTIs may improve with increased water intake, but the NHS recommends consulting a doctor if symptoms don't resolve within 48 hours. Untreated UTIs can spread to the kidneys, which is a serious condition.

Can I travel with a UTI?

Yes, but make sure to stay well hydrated, have access to toilet facilities, and ideally start treatment before travelling. If you need a prescription before a flight, book with UrgentDoc for a same-day online consultation.

Can an online doctor diagnose and treat a UTI?

Yes. Most uncomplicated UTIs can be diagnosed based on symptoms during a video consultation. Your doctor can prescribe antibiotics or UTI-specific medication, sent digitally to any Spanish pharmacy.

Are UTIs sexually transmitted?

UTIs are not sexually transmitted infections, but sexual activity can introduce bacteria to the urinary tract. Urinating after sex and good hygiene can reduce this risk.

How long does it take for a UTI to clear up?

With appropriate antibiotic treatment, most uncomplicated UTIs improve significantly within 1–3 days. Complete the full course of antibiotics even if you feel better.

Can men get UTIs?

Yes, though less commonly than women. UTIs in men may indicate an underlying issue such as an enlarged prostate and should always be assessed by a doctor.

🔹 Get UTI Treatment Online in Spain

A UTI can be uncomfortable and distracting — especially when you're travelling or can't easily get to a clinic. Don't wait for symptoms to worsen.

👉 Book an online consultation with UrgentDoc — get a professional UTI assessment in minutes, receive your e-prescription sent to any Spanish pharmacy, and start feeling better faster.