Urinary Frequency and Urgency
Reviewed by Dr C. J. Odike, MRCGP
You may think that passing urine often always means your bladder is small or infected. Frequency and urgency may arise because you are making more urine, your bladder is irritated, it contracts too early, it does not empty properly or reaching a toilet is difficult. The amount passed each time is as important as how often you go.
Frequency means passing urine more often than usual Urinary frequency means needing to pass urine more often than is normal for you. The number of toilet visits varies with fluid intake, weather, medicines, pregnancy, bladder capacity, sleep, and daily routine. Some clinical resources use more than about eight visits in 24 hours as a marker of frequency, but the number alone does not diagnose a condition. The volume passed and effect on daily life also matter. Urgency means a sudden compelling need Urinary urgency is a sudden, difficult to defer need to urinate. You may rush to the toilet, leak before reaching it, feel triggered by running water or arriving home, avoid unfamiliar places, restrict travel or social activity, or pass only a small amount. Urgency with or without leakage, usually accompanied by frequency and night time urination, may form part of overactive bladder syndrome. Nocturia means waking to urinate Nocturia means waking from sleep to pass urine. It may result from bladder urgency, prostate or emptying problems, producing more urine at night, leg fluid returning to the circulation when you lie down, sleep disturbance, medicines, diabetes, or drinking late in the evening. Waking once may be normal for some people. New, frequent or disruptive nocturia deserves assessment. Polyuria means producing a large volume Frequency is not the same as polyuria. With frequency, you may pass small or normal amounts often. With polyuria, your kidneys produce an unusually large overall volume, often causing large amounts of pale urine, marked thirst, repeated night time urination, and risk of dehydration. Diabetes mellitus can cause frequent urination, thirst, tiredness and unexplained weight loss. Diabetes insipidus is a different, rare condition causing very large volumes of dilute urine and intense thirst. A bladder diary separates the patterns A bladder diary records the time of each drink, type and approximate amount of fluid, time of each urination, amount passed, urgency, leakage, night time episodes, and activities or triggers. Three representative days often provide useful information. Frequency volume charts are recommended for men with bothersome lower urinary symptoms, and at least a three day bladder diary for women with incontinence or overactive bladder. Infection commonly causes urgency and frequency A lower UTI may cause burning, frequency, urgency, lower abdominal discomfort, cloudy urine, blood, or new night time symptoms. Fever, shivering, vomiting or pain beneath the ribs raises concern about kidney infection. Overactive bladder is a symptom syndrome Overactive bladder means urgency, usually with frequency and nocturia, with or without urgency leakage. It is diagnosed after considering other explanations such as infection, diabetes, excess fluid or caffeine, medicines, retention, stones, or neurological disease. The term describes a pattern. It does not mean that the bladder is damaged or that every urge represents a full bladder. Fluid intake, caffeine and diuretics If you drink too little, urine becomes concentrated and may irritate the bladder. If you drink excessive amounts, the bladder fills repeatedly. The aim is balanced intake, adjusted for your size, activity, weather and medical conditions. People with heart or kidney failure may have an individual fluid plan and should not increase intake without advice. Caffeine may increase urine production and stimulate bladder urgency. Sources include coffee, tea, energy drinks, cola and some medicines. Alcohol can increase urine production and affect awareness or mobility. A trial of caffeine reduction is recommended for women with overactive bladder, alongside reviewing unusually high or low fluid intake. A diuretic medicine helps the body remove salt and water through urine. These are commonly used for heart failure, high blood pressure, swelling and kidney conditions. Urinary frequency after a diuretic may be expected, particularly after the dose. Do not stop or change the timing without advice. Pregnancy changes bladder function Frequency is common in pregnancy because kidney blood flow increases, hormonal changes affect the urinary tract, and the growing womb places pressure on the bladder. Frequency alone may be expected. Burning, fever, blood, back pain or feeling unwell requires prompt assessment for infection. Prostate enlargement can affect storage and emptying If you have a prostate, enlargement may narrow the urethra and contribute to frequency, urgency, nocturia, difficulty starting, weak flow, stopping and starting, straining, incomplete emptying, or dribbling. Frequency does not prove prostate enlargement. Overactive bladder, diabetes and infection can produce similar symptoms. Incomplete emptying can look like frequency If urine remains in the bladder after you finish, the bladder begins refilling from a higher starting volume. Possible clues include weak stream, hesitancy, straining, stopping and starting, feeling incompletely empty, dribbling, frequent small voids, overflow leakage, or repeated infections. A bladder scan can measure the post void residual, the urine remaining after urination. Constipation can disturb bladder function A full rectum can press on the bladder, reduce space for filling, interfere with emptying, increase urgency, and contribute to wetting in children. Treating constipation may improve urinary symptoms. Do not overlook bowel habit when assessing frequency or urgency. Children may not describe urgency clearly A child may cross their legs, squat or hold the genital area, rush suddenly to the toilet, pass urine frequently, develop daytime wetting, begin bedwetting after being dry, avoid school toilets, or hold urine for long periods. Possible causes include UTI, constipation, overactive bladder, dysfunctional voiding, diabetes, or emotional and environmental factors. Frequency and new bedwetting are features that increase the likelihood of UTI in children. New thirst and wetting may indicate diabetes In a child or adult, the combination of passing large amounts, marked thirst, tiredness, weight loss, and new bedwetting requires prompt testing for diabetes. Children can deteriorate quickly if type 1 diabetes is not recognised. Bedwetting should not be punished Night time wetting is common in children and may persist while bladder control develops. Assessment considers developmental age, daytime urgency or wetting, constipation, fluid pattern, sleep, UTI symptoms, diabetes symptoms, and whether the child had previously been dry. A developmental age of about 5 years is generally regarded as the point by which night time dryness may be expected, while recognising wide variation. Frequency is not an inevitable part of ageing Age related changes can contribute, but treatable factors remain common: medicines, prostate enlargement, menopause related genital changes, overactive bladder, constipation, mobility barriers, diabetes, sleep disorders, heart failure, or retention. Older adults should not be told simply to accept disruptive symptoms. Neurological conditions may affect storage and emptying The bladder depends on coordinated nerve signals. Conditions affecting the brain, spinal cord or peripheral nerves may cause urgency, retention, incontinence, reduced sensation, poor coordination between bladder and sphincter, or recurrent UTI. Assessment should include neurological symptoms, bowel function, mobility, hand function, cognition and existing bladder management. Sudden urinary change can be neurological New urinary difficulty or leakage with severe back or leg pain, saddle area numbness, weakness in both legs, loss of bladder sensation, bowel dysfunction, or sexual function change may indicate cauda equina syndrome and requires emergency assessment. Tests are selected according to the pattern Possible tests include urine dipstick, urine culture, blood glucose or HbA1c, kidney function blood tests, pregnancy testing where relevant, bladder scan, prostate assessment, pelvic examination, neurological examination, and further specialist bladder testing. Urine testing and a symptom guided examination are recommended for men with lower urinary symptoms. Routine scans and cystoscopy are not required for uncomplicated symptoms at the first assessment. Bladder training can reduce urgency Bladder training aims to increase the interval between toilet visits gradually and reduce automatic responses to urgency. It may involve following an agreed toilet schedule, using calm urge suppression techniques, gradually extending intervals, avoiding "just in case" urination, and recording progress. Bladder training for at least 6 weeks is recommended as first line treatment for women with urgency or mixed incontinence. It is not appropriate when you have untreated infection, acute retention or another condition requiring urgent treatment. Pelvic floor control can assist urgency A correctly performed pelvic floor contraction may help suppress an urge while you move calmly towards a toilet. Repeatedly stopping urine midstream is not recommended as the main exercise method because it can interfere with emptying. A pelvic health or continence professional can check technique. Medicines and toileting access form part of treatment Medicines for overactive bladder may reduce urgency and frequency. Choice depends on age, blood pressure, constipation, cognitive health, glaucoma, emptying ability, and other medicines. Some treatments can worsen dry mouth, constipation or retention and require review rather than indefinite automatic continuation. Symptoms may worsen when toilets are inaccessible, clothing is difficult to remove, mobility aids are unavailable, staff do not respond promptly, a child avoids an unclean school toilet, or a person with cognitive impairment cannot locate the toilet. Reasonable environmental adjustments can reduce urgency related accidents without changing bladder physiology.
Frequency and urgency are storage symptoms with several possible mechanisms. A safe assessment separates more urine being produced, a bladder signalling too early, inflammation or infection, incomplete bladder emptying, and pelvic floor, neurological or mobility factors. A bladder diary helps distinguish these patterns.
Medical words made simple
- Frequency
- Passing urine more often than is usual or practical for you.
- Urgency
- A sudden compelling need to urinate that is difficult to delay.
- Nocturia
- Waking from sleep to pass urine.
- Polyuria
- Producing an unusually large overall volume of urine.
- Overactive bladder
- Urgency, usually with frequency and nocturia, with or without leakage.
- Post-void residual
- Urine remaining in the bladder after you have urinated.
Quick recap
- Frequency (how often) and polyuria (how much overall) are different things large pale volumes with thirst point towards diabetes, not just an irritable bladder.
- A bladder diary over 3 days reveals patterns better than counting toilet trips alone.
- Restricting fluids to reduce urgency usually backfires concentrated urine irritates the bladder more.
- New bedwetting with thirst, tiredness and weight loss in a child needs prompt diabetes testing.
- Bladder training (6+ weeks) is a recommended first line treatment for urgency symptoms.
- New urinary symptoms with saddle numbness or leg weakness in both legs is a cauda equina emergency.