Patients with incontinence should be referred to a medical practitioner specializing in this field. Urologists specialize in the urinary tract, and some urologists further specialize in the female urinary tract. A urogynecologist is a gynecologist who has special training in urological problems in women. Family physicians and internists see patients for all kinds of complaints, and are well trained to diagnose and treat this common problem. These primary care specialists can refer patients to urology specialists if needed.

A careful history taking is essential especially in the pattern of voiding and urine leakage as it suggests the type of incontinence faced. Other important points include straining and discomfort, use of drugs, recent surgery, and illness.

The physical examination will focus on looking for signs of medical conditions causing incontinence, such as tumors that block the urinary tract, stool impaction, and poor reflexes or sensations, which may be evidence of a nerve-related cause.

A test often performed is the measurement of bladder capacity and residual urine for evidence of poorly functioning bladder muscles.

Other tests include:

- Stress test – the patient relaxes, then coughs vigorously as the doctor watches for loss of urine.

- Urinalysis – urine is tested for evidence of infection, urinary stones, or other contributing causes.

- Blood tests – blood is taken, sent to a laboratory, and examined for substances related to causes of incontinence.

- Ultrasound – sound waves are used to visualize the kidneys, ureters, bladder, and urethra.

- Cystoscopy – a thin tube with a tiny camera is inserted in the urethra and used to see the inside of the urethra and bladder.

- Urodynamics – various techniques measure pressure in the bladder and the flow of urine.

Patients are often asked to keep a diary for a day or more, up to a week, to record the pattern of voiding, noting times and the amounts of urine produced.

Research projects that assess the efficacy of anti-incontinence therapies often quantify the extent of urinary incontinence. The methods include the 1-h pad test, measuring leakage volume; using a voiding diary, counting the number of incontinence episodes (leakage episodes) per day; and assessing of the strength of pelvic floor muscles, measuring the maximum vaginal squeeze pressure.

An incontinence pad is a multi-layered, absorbent sheet that collects urine resulting from urinary incontinence. Similar solutions include absorbent undergarments and adult diapers. Absorbent products may cause side effects of leaks, odors, skin breakdown, and UTI. Incontinence pads may also come in the form of a small sheet placed underneath a patient in the hospital, for situations when it is not practical for the patient to wear a diaper.

One of the most common treatment recommendations includes exercising the muscles of the pelvis. Kegel exercises to strengthen or retrain pelvic floor muscles and sphincter muscles can reduce stress leakage. Patients younger than 60 years old benefit the most. The patient should do at least 24 daily contractions for at least 6 weeks. It is possible to assess pelvic floor muscle strength using a Kegel perineometer.

Increasingly there is evidence of the effectiveness of pelvic floor muscle exercise (PFME) to improve bladder control. For example, urinary incontinence following childbirth can be improved by performing PFME.

Clinical trials of a Progressive Resistance Vaginal Exerciser concluded that the device was as effective as Supervised Pelvic Floor Muscle Training.

Many people with OAB symptoms had those symptoms subside within a year, with estimates as high as 39%, but most have symptoms for several years.

Globally, up to 35% of the population over the age of 60 years is estimated to be incontinent.

In 2014, urinary leakage affected between 30% and 40% of people over 65 years of age living in their own homes or apartments in the U.S. Twenty-four percent of older adults in the U.S. have moderate or severe urinary incontinence that should be treated medically.

Bladder control problems have been found to be associated with higher incidence of many other health problems such as obesity and diabetes. Difficulty with bladder control results in higher rates of depression and limited activity levels.

Incontinence is expensive both to individuals in the form of bladder control products and to the health care system and nursing home industry. Injury related to incontinence is a leading cause of admission to assisted living and nursing care facilities. More than 50% of nursing facility admissions are related to incontinence.

Pelvic floor dysfunction can be diagnosed by history and physical exam, though it is more accurately graded by imaging. Historically, fluoroscopy with defecography and cystography were used, though modern imaging allows the usage of MRI to complement and sometimes replace fluoroscopic assessment of the disorder, allowing for less radiation exposure and increased patient comfort, though an enema is required the evening before the procedure. Instead of contrast, ultrasound gel is used during the procedure with MRI. Both methods assess the pelvic floor at rest and maximum strain using coronal and sagittal views. When grading individual organ prolapse, the rectum, bladder and uterus are individually assessed, with prolapse of the rectum referred to as a rectocele, bladder prolapse through the anterior vaginal wall a cystocele, and small bowel an enterocele.

To assess the degree of dysfunction, three measurements must be taken into account. First, an anatomic landmark known as the pubococcygeal line must be determined, which is a straight line connecting the inferior margin of the pubic symphysis at the midline with the junction of the first and second coccygeal elements on a sagittal image. After this, the location of the puborectalis muscle sling is assessed, and a perpendicular line between the pubococcygeal line and muscle sling is drawn. This provides a measurement of "pelvic floor descent", with descent greater than 2 cm being considered mild, and 6 cm being considered severe. Lastly, a line from the pubic symphysis to the puborectalis muscle sling is drawn, which is a measurement of the pelvic floor hiatus. Measurements of greater than 6 cm are considered mild, and greater than 10 cm severe. The degree of organ prolapse is assessed relative to the hiatus. The grading of "organ prolapse" relative to the hiatus is more strict, with any descent being considered abnormal, and greater than 4 cm being considered severe.

Studies have shown that 30%-40% of all women deal with athletic incontinence, with some studies reporting up to 69% of women as sufferers. Athletes in high impact sports such as gymnastics and basketball are likely to suffer from incontinence, with over 60% of subjects in each sport reporting they suffer from athletic leaks during activity.

Rarely do sufferers of athletic incontinence seek treatment, with one study showing that over 95% of subjects had not sought professional advice on their condition. Those who participated in the study claimed they didn’t seek help because they were embarrassed or thought it was a normal condition.

Diagnosis of OAB is made primarily on the person's signs and symptoms and by ruling out other possible causes such as an infection. Urodynamics, a bladder scope, and ultrasound are generally not needed. Additionally, urine culture may be done to rule out infection. The frequency/volume chart may be maintained and cystourethroscopy may be done to exclude tumor and kidney stones. If there is an underlying metabolic or pathologic condition that explains the symptoms, the symptoms may be considered part of that disease and not OAB.

OAB causes similar symptoms to some other conditions such as urinary tract infection (UTI), bladder cancer, and benign prostatic hyperplasia (BPH). Urinary tract infections often involve pain and hematuria (blood in the urine) which are typically absent in OAB. Bladder cancer usually includes hematuria and can include pain, both not associated with OAB, and the common symptoms of OAB (urgency, frequency, and nocturia) may be absent. BPH frequently includes symptoms at the time of voiding as well as sometimes including pain or hematuria, and all of these are not usually present in OAB. Diabetes insipidus, which causes high frequency and volume, though not necessarily urgency.

Several severity scales exist. The Cleveland Clinic (Wexner) fecal incontinence score takes into account five parameters that are scored on a scale from zero (absent) to four (daily) frequency of incontinence to gas, liquid, solid, of need to wear pad, and of lifestyle changes. The Park's incontinence score uses four categories:

The fecal incontinence severity index is based on four types of leakage (gas, mucus, liquid stool, solid stool) and five frequencies (once to three times per month, once per week, twice per week, once per day, twice or more per day). Other severity scales include: AMS, Pescatori, Williams score, Kirwan, Miller score, Saint Mark's score and the Vaizey scale.

Physical examination can rule out anismus (by identifying another cause) but is not sufficient to diagnose anismus.

The rectal cooling test is suggested to differentiate between rectal inertia and impaired relaxation/paradoxical contraction

Other techniques include manometry, balloon expulsion test, evacuation proctography (see defecating proctogram), and MRI defecography. Diagnostic criteria are: fulfillment of criteria for functional constipation, manometric and/or EMG and/or radiological evidence (2 out of 3), evidence of adequate expulsion force, and evidence of incomplete evacuation. Recent dynamic imaging studies have shown that in persons diagnosed with anismus the anorectal angle during attempted defecation is abnormal, and this is due to abnormal (paradoxical) movement of the puborectalis muscle.

The condition is widespread, affecting up to 50% of women at some point in their lifetime. Almost 10 percent of women will undergo surgery for urinary incontinence or pelvic organ prolapse. 30 percent of those undergoing surgery will have at least two surgeries in trying to correct the problem.

Some conditions are reversible, with pelvic floor exercises, or Kegel exercises recommended to strengthen the area muscles. Devices and probes are also available over the counter which purport to increase pelvic floor tone by stimulating muscle contractions with electrical impulses.

The Gold standard for all Urinary incontinence is an urodynamic study that looks for bladder capacity, detrusor stability, contractility and voiding ability (Cystometry)

FI may present with signs similar to rectal discharge (e.g. fistulae, proctitis or rectal prolapse), pseudoincontinence, encopresis (with no organic cause) and irritable bowel syndrome.

Athletic incontinence (athletic leakage, athletic leaks, exercise-induced urinary incontinence) is the specific form of urinary incontinence that results from engaging in high-impact or strenuous activities. Unlike stress incontinence, which is defined as the loss of small amounts of urine associated with sneezing, laughing or exercising, athletic incontinence occurs exclusively during exercise. Athletic incontinence is generally thought to be the result of decreased structural support of the pelvic floor due to increased abdominal pressure during high-impact exercise. As such exercises that build and develop the pelvic floor may be an important step to counteracting athletic incontinence. In addition to high-impact exercise, this weakening can also stem from childbirth and age.

Bethanechol (Management of overflow incontinence by activating muscarinic receptors in the bladder and stimulating contraction to void the urine, NOT a treatment modality; must rule out urinary obstruction prior to use.)

If an incontinence is due to overflow incontinence, in which the bladder never empties completely, or if the bladder cannot empty because of poor muscle tone, past surgery, or spinal cord injury, a catheter may be used to empty the bladder. A catheter is a tube that can be inserted through the urethra into the bladder to drain urine. Catheters may be used once in a while or on a constant basis, in which case the tube connects to a bag that is attached to the leg. If a long-term (or indwelling) catheter is used, urinary tract infections may occur.

Cystocele may be mild enough not to result in symptoms that are troubling to a woman. In this case, steps to prevent it from getting worse.These are:

- smoking cessation

- losing weight

- pelvic floor strengthening

- treatment of a chronic cough

- maintaining healthy bowel habits

- eating high fiber foods

- avoiding constipation and straining

A number of scales exist to grade the severity of the condition.

The pelvic organ prolapse quantification (POP-Q) assessment, developed in 1996, quantifies the descent of the cystocele into the vagina. The POP-Q provides reliable description of the support of the anterior, posterior and apical vaginal wall. It uses objective and precise measurements to the reference point, the hymen. Cystocele and prolapse of the vagina from other causes is staged using POP-Q criteria can range from good support (no descent into the vagina) reported as a POP-Q stage 0 or I to a POP-Q score of IV which includes prolapse beyond the hymen. It also used to quantifies the movement of other structures into the vaginal lumen and their descent.

The Baden–Walker Halfway Scoring System is used as the second most used system and assigns the classifications as mild (grade 1) when the bladder droops only a short way into the vagina; (grade 2) cystocele, the bladder sinks far enough to reach the opening of the vagina; and (grade 3) when the bladder bulges out through the opening of the vagina.

Diagnosis is by rectal examination. A specialized tool called a "Perineocaliper" can be used to measure the descent of the perineum. A retro anal ultrasound scan may demonstrate the condition. "Anti sagging tests", whereby the abnormal descent is corrected temporarily, may help to show whether symptoms are due to descending perineum syndrome or are in fact due to another condition.

Normally, the anal margin lies just below a line drawn between the coccyx (tailbone) and the pubic symphysis. In descending perineum syndrome the anal canal is situated several cm below this imaginary line, or it descends 3–4 cm during straining.

Defecography may also demonstrate abnormal perineal descent.

Post-void dribbling or post-micturition dribbling is the where urine remaining in the urethra after voiding the bladder slowly leaks out after urination. A common and usually benign complaint, it may be a symptom of urethral diverticulum, prostatitis and other medical problems.

Men who experience dribbling, especially after prostate cancer surgery, will choose to wear incontinence pads to stay dry. Also known as guards for men, these incontinence pads conform to the male body. Some of the most popular male guards are from Tena, Depends, and Prevail. Simple ways to prevent dribbling include: strengthening pelvic muscles with Kegel exercises, changing position while urinating, or pressing on the perineum to evacuate the remaining urine from the urethra. Sitting down while urinating is also shown to alleviate complaints: a meta-analysis on the effects of voiding position in elderly males with benign prostate hyperplasia found an improvement of urologic parameters in this position, while in healthy males no such influence was found.

Functional incontinence can also occur at any age in circumstances where there is no apparent medical problem. For example, a person may recognise the need to urinate but are unable to do so because there is no toilet or suitable alternative nearby or access to a toilet is restricted or prohibited.

If a suitable place to urinate does not become available, the person may reach a stage where they are no longer able to refrain from urination and involuntary voiding of the bladder may take place. Instances of this sort will often result in full emptying of the bladder, but are likely to be one-off or rare occurrences. Excessive alcohol consumption can also cause episodes of incontinence in otherwise healthy adults.

Clinical definition of enuresis is urinary incontinence beyond age of 4 years for daytime and beyond 6 years for nighttime, or loss of continence after three months of dryness.

Current DSM-IV-TR criteria:

- Repeated voiding of urine into bed or clothes (whether involuntary or intentional)

- Behavior must be clinically significant as manifested by either a frequency of twice a week for at least three consecutive months or the presence of clinically significant distress or impairment in social, academic (occupational), or other important areas of functioning.

- Chronological age is at least 5 years of age (or equivalent developmental level).

- The behavior is not due exclusively to the direct physiological effect of a substance (such as a diuretic) or a general medical condition (such as diabetes, spina bifida, a seizure disorder, etc.).

All these criteria must be met in order to diagnose an individual.

Episodes of giggle incontinence are embarrassing and socially incapacitating, diminishing the quality of life. Those having the condition learn to adapt by avoiding activities that may bring on laughter. Other approaches include limiting fluid intake, trying to remain seated, and concealing leakage by wearing absorbent pads and dark clothing.

Anal dilation, or stretching of the anal canal (Lord's operation), has fallen out of favour in recent years, primarily due to the unacceptably high incidence of fecal incontinence. In addition, anal stretching can increase the rate of flatus incontinence.

In the early 1990s, however, a repeatable method of anal dilation proved to be very effective and showed a very low incidence of side effects. Since then, at least one other controlled, randomized study has shown there to be little difference in healing rates and complications between controlled anal dilation and LIS, while another has again shown high success rates with anal dilation coupled with low incidence of side effects.

Favorable response to treatment with the ADHD drug methylphenidate (Ritalin) has been reported, but this treatment option is not acceptable to all patient families.

Dr. Lane Robson, of The Children’s Clinic in Calgary, Alberta, says "If a child is having a wetting episode once a month, medicating them daily is probably not a good treatment. If it’s a daily issue, you may have to make that decision."