Cystitis and urine infections in women explained

What cystitis and a UTI are

The urinary tract runs from the kidneys down through the tubes to the bladder and out through the urethra. A urinary tract infection happens when bacteria — usually from the bowel — get into this normally sterile system and multiply. When the infection is in the bladder it causes cystitis. Women get UTIs far more often than men because the urethra is shorter, so bacteria reach the bladder more easily. Sex, the menopause, pregnancy, diabetes and anything that stops the bladder emptying fully can all increase the risk. Most bladder infections are uncomplicated and settle quickly with treatment; the concern is when infection travels up to the kidneys, which is more serious.

Recognising the symptoms

Classic cystitis causes a burning or stinging pain when passing urine, a frequent and urgent need to go even when little comes out, and urine that may look cloudy, dark or strong-smelling. Some women notice lower tummy discomfort or a general feeling of being unwell, and occasionally traces of blood in the urine. In healthy younger women these lower urinary symptoms usually mean a simple bladder infection. Symptoms that suggest the infection has reached the kidneys are different and more serious: pain in the back or side (the loin), a high temperature with shivering, feeling sick or vomiting, and feeling generally very unwell. These need urgent medical attention rather than self-care.

Self-care and pharmacy treatment

For a mild bout, self-care can help: drinking enough fluid, and paracetamol for pain. Symptoms of a simple bladder infection often improve within a few days. Under the NHS Pharmacy First scheme in England, a community pharmacist can now assess women aged 16 to 64 with symptoms of an uncomplicated UTI and, where appropriate, supply antibiotics without a GP appointment — a faster route for straightforward cases. The pharmacist also checks for features that mean you need a GP or urgent care instead. Cranberry products and urine-alkalinising sachets are sometimes used, but the evidence that they treat an established infection is limited, so they are not a substitute for proper assessment when symptoms are significant.

When antibiotics and further checks are needed

Not every case needs antibiotics, but many symptomatic UTIs in women do, and treatment usually clears the infection quickly. Certain groups always need clinical assessment rather than self-treatment: pregnant women, men, children, people with a catheter, anyone with recurrent infections, and those whose symptoms do not improve with treatment. Pregnancy is important because a UTI in pregnancy needs prompt, appropriate treatment to protect mother and baby. If UTIs keep coming back, a clinician may look for an underlying reason, review contributing factors such as vaginal dryness after the menopause, and discuss prevention. A urine sample may be sent to the laboratory to identify the bacteria and guide the best antibiotic.

Prevention and safety-netting

Some practical measures may reduce recurrent cystitis: drinking enough through the day, not holding on when you need to pass urine, and wiping front to back. After the menopause, vaginal dryness can contribute, and a clinician can advise on treatments that help. The key safety-netting message is to seek urgent help if you develop pain in your back or side, a high temperature or shivering, feel sick or are vomiting, notice confusion, or feel very unwell — these suggest the infection may have reached the kidneys or the bloodstream. This is general education, not a diagnosis. If someone becomes very unwell, drowsy, confused, or has signs of serious infection such as cold clammy skin and a racing heart, call 999.