What Is Cystitis? Causes, Symptoms and Treatment for Women UK

What Is Cystitis?

Cystitis is inflammation of the bladder — most commonly caused by a bacterial infection in the bladder, known as a urinary tract infection (UTI). It is one of the most common conditions affecting women of all ages in the UK. When caused by bacteria, seeking treatment is important: as well as being painful, untreated bladder infections can spread to the kidneys and become a serious health problem.

However, it is important to understand that cystitis is not always caused by a UTI. Bladder inflammation can also occur when the body reacts to certain medications (particularly chemotherapy drugs such as cyclophosphamide), radiation therapy to the pelvic area, or irritating hygiene and sexual health products such as feminine hygiene sprays, lubricants, and spermicidal jellies.

For a full overview of treatment options, see: How to Treat Cystitis: Home Remedies, Antibiotics and Prevention. For information on cystitis medicines, see: Cystitis Medicines UK: Nitrofurantoin and Trimethoprim Explained.

Is Cystitis a UTI?

Although the terms are often used interchangeably, there is a technical distinction. Cystitis means bladder inflammation and can occasionally have non-bacterial causes. A UTI specifically refers to a bacterial infection anywhere in the urinary tract. In practice, the vast majority of cystitis cases in otherwise healthy women are caused by a bacterial UTI — so the distinction rarely matters clinically.

Can Men Get Cystitis?

While cystitis is primarily a condition affecting women, men can also experience it — though it is significantly less common. Because UTIs in men are more likely to indicate an underlying problem (such as kidney stones, prostate enlargement, or narrowing of the urethra), men with UTI symptoms should seek in-person GP assessment rather than an online consultation.

Symptoms of Cystitis

Symptoms of cystitis can vary between individuals, but typically include some or all of the following:

• Needing to urinate more frequently than usual
• Feeling the urge to urinate immediately after emptying the bladder
• A burning or stinging sensation when urinating (dysuria)
• Strong-smelling or cloudy urine
• Blood in urine (haematuria)
• Cramping in the lower back and/or abdomen
• A low-grade temperature (if cystitis is infection-related)

What Causes Cystitis?

Sometimes cystitis occurs as a complication of another medical condition — kidney stones, long-term spinal injuries, diabetes, prostate enlargement, or HIV can all contribute.

Can Stress Cause Cystitis?

There is no direct evidence that stress itself causes cystitis. However, chronic stress is associated with a weakened immune system — meaning that if your immune defences are reduced, you may be more vulnerable to infections, including bacterial UTIs. Some women also report that emotional stress appears to trigger or worsen symptoms, though the precise mechanism is not fully understood.

How to Diagnose Cystitis

If you are concerned you have cystitis, speak to your GP or a healthcare professional. Diagnosis typically involves:

1. Urine sample test — first-line test. Checks for bacteria, blood, or pus. A positive result may prompt a culture test to identify the specific organism.
2. Cystoscopy — if no bacteria is found but symptoms persist or cystitis is recurrent. A thin camera tube examines the bladder lining. A biopsy may be taken.
3. Imaging — rarely needed. Ultrasound or X-ray can identify unusual causes such as tumours or structural abnormalities.

When Should You See a Doctor for Cystitis? Red Flag Symptoms

Always seek same-day medical advice if you experience any of the following:

• Fever above 38°C
• Back or loin pain alongside urinary symptoms — may indicate kidney infection (pyelonephritis)
• Shaking, rigors, or feeling extremely unwell
• Nausea and vomiting alongside UTI symptoms
• Blood in your urine that has not been seen before or is worsening
• Symptoms not improving within 48–72 hours of starting antibiotics
• Pregnancy — UTI in pregnancy always requires in-person assessment

Recurrent Cystitis: When UTIs Keep Coming Back

Around 20–30% of women who have one UTI will have a recurrence. If you are getting three or more UTIs per year, this is classified as recurrent UTI and requires a different management approach beyond repeat antibiotic prescriptions.

Recurrent cystitis may be investigated with urine culture, assessment of lifestyle factors (hydration, post-coital hygiene, contraception), possible cystoscopy or imaging, and consideration of prophylactic antibiotics. If you have recurrent UTIs, discuss long-term management with your GP. Access Doctor can treat acute episodes, but recurrence management requires an ongoing clinical relationship.

For information on getting treatment, see: UTI Antibiotics Online UK for Women and Online UTI Treatment for Women UK.

What to Do When You Have Cystitis

If you think you have cystitis, drink plenty of water and take paracetamol or ibuprofen for pain relief. If symptoms persist beyond 24 hours, seek medical advice. Access Doctor offers a convenient online consultation — reviewed by GPhC-registered pharmacist independent prescribers — with nitrofurantoin or trimethoprim dispatched for next-day delivery if appropriate.

For a full guide to which antibiotic is right for you, see: Cystitis Medicines UK: Nitrofurantoin and Trimethoprim Explained.

For a comprehensive overview of cystitis and UTI — causes, symptoms, diagnosis and all treatment options — see our complete cystitis and UTI guide. [Pillar page — link to be activated on publication]