IBS Glossary > Interstitial Cystitis (IC)
Interstitial Cystitis (IC) / Painful Bladder Syndrome
Interstitial cystitis (IC), also known as Painful Bladder Syndrome, and Irritable Bowel Syndrome are two pelvic pain syndromes that often co-exist.
In interstitial cystitis, patients struggle with a very sensitive bladder and, in many cases, severe inflammation and/or wounds in their bladders.
A typical IC patient experiences urinary frequency, feeling that they need to urinate every hour or more often. Sleep is often disrupted nightly. Patients may struggle with sudden bladder "urgency."
For many IC patients, bladder pain is the dominant symptom, particularly as their bladder fills with urine.
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What is Interstitial Cystitis (IC) / Painful Bladder Syndrome?
Interstitial cystitis (IC) is a condition that results in recurring discomfort or pain in the bladder and the surrounding pelvic region. The symptoms vary from case to case and even in the same individual. People may experience mild discomfort, pressure, tenderness, or intense pain in the bladder and pelvic area. Symptoms may include an urgent need to urinate, a frequent need to urinate, or a combination of these symptoms. Pain may change in intensity as the bladder fills with urine or as it empties. Women�s symptoms often get worse during menstruation. They may sometimes experience pain during vaginal intercourse.
Because IC varies so much in symptoms and severity, most researchers believe it is not one, but several diseases. In recent years, scientists have started to use the terms bladder pain syndrome (BPS) or painful bladder syndrome (PBS) to describe cases with painful urinary symptoms that may not meet the strictest definition of IC.
The term IC/PBS includes all cases of urinary pain that can�t be attributed to other causes, such as infection or urinary stones. The term interstitial cystitis, or IC, is used alone when describing cases that meet all of the IC criteria established by the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK).
In IC/PBS, the bladder wall may be irritated and become scarred or stiff. Glomerulations (pinpoint bleeding) often appear on the bladder wall. Hunner�s ulcers (patches of broken skin found on the bladder wall) are present in 10 percent of people with IC.
Some people with IC/PBS find that their bladder cannot hold much urine, which increases the frequency of urination. Frequency, however, is not always specifically related to bladder size; many people with severe frequency have normal bladder capacity when measured under anesthesia or during urologic testing. People with severe cases of IC/PBS may urinate as many as 60 times a day, including frequent nighttime urination, which is called nocturia.
Interstitial cystitis, like Irritable Bowel Syndrome, is far more common in women than in men. Of the estimated 1.3 million Americans with IC/PBS, more than 1 million are women.
No evidence exists that IC increases the risk of bladder cancer.
Researchers have little information about pregnancy and IC but believe that the disorder does not affect fertility or the health of the fetus. Some women find that their IC goes into remission during pregnancy, while others experience a worsening of their symptoms.
What causes Interstitial Cystitis / Painful Bladder Syndrome?
Some of the symptoms of IC resemble those of bacterial infection, but medical tests reveal no organisms in the urine of people with IC. Furthermore, people with IC do not respond to antibiotic therapy. Researchers are working to understand the causes of IC and to find effective treatments.
Many women with IC have overlapping conditions such as Irritable Bowel Syndrome and fibromyalgia. Scientists believe IC may be a bladder manifestation of a more general condition that causes inflammation in various organs and parts of the body.
Researchers are beginning to explore the possibility that heredity may play a part in some forms of IC. In a few cases, IC has affected a mother and a daughter or two sisters, but it does not commonly run in families.
How is Interstitial Cystitis / Painful Bladder Syndrome diagnosed?
Because symptoms are similar to those of other disorders of the bladder and there is no definitive test to identify IC, doctors must rule out other treatable conditions before considering a diagnosis of IC. The most common of these diseases in both sexes are urinary tract infections and bladder cancer. In men, common diseases include chronic prostatitis or chronic pelvic pain syndrome. In women, endometriosis is a common cause of pelvic pain. IC is not associated with any increased risk of developing cancer.
The diagnosis of IC in the general population is based on the following:
* presence of pain related to the bladder
* frequency and urgency of urination
* absence of other diseases that could cause the symptoms
Diagnostic tests that help rule out other diseases include urinalysis, urine culture, cystoscopy, biopsy of the bladder wall and urethra, and distention of the bladder under anesthesia.
What are the treatments for Interstitial Cystitis / Painful Bladder Syndrome??
As yet there is no cure for IC, nor can physicians predict who will respond best to which treatment. Symptoms may disappear with a change in diet or other treatments, or without explanation. Even when symptoms disappear, they may return after days, weeks, months, or years. Researchers do not know why.
Because the causes of IC are unknown, current treatments are aimed at relieving symptoms. Many people are helped for variable periods by one or a combination of treatments. As researchers learn more about IC, the list of potential treatments will change, so patients should discuss updated options with their doctor on a regular basis.
Many people with IC have noted an improvement in symptoms after a bladder distention has been done to diagnose the condition. In some cases, the procedure is actually used as both a diagnostic test and initial therapy. Researchers are not sure why distention helps, but some believe it may increase capacity and interfere with pain signals transmitted by nerves in the bladder. Symptoms may temporarily worsen 4 to 48 hours after distention, but should return to predistention levels or improve within 2 to 4 weeks.
During a bladder instillation, also called a bladder wash or bath, the bladder is filled with a solution that is held for varying periods of time, averaging 10 to 15 minutes, before being emptied. The only drug approved by the U.S. Food and Drug Administration (FDA) for bladder instillation is dimethyl sulfoxide (Rimso-50), also called DMSO. DMSO treatment involves guiding a narrow tube called a catheter up the urethra into the bladder. A measured amount of DMSO is passed through the catheter into the bladder, where it is retained for about 15 minutes before being expelled.
DMSO treatments are given every week or two for 6 to 8 weeks and repeated as needed. Most people who respond to DMSO notice improvement 3 or 4 weeks after the first 6- to 8-week cycle of treatments. Highly motivated patients who are willing to catheterize themselves may, after consultation with their doctor, be able to have DMSO treatments at home. Self-administration is less expensive and more convenient than going to the doctor�s office.
Doctors think DMSO works in several ways. Because it passes into the bladder wall, it may reach tissue more effectively to reduce inflammation and block pain. It may also prevent muscle contractions that cause pain, frequency, and urgency.
A bothersome but relatively insignificant side effect of DMSO treatments is a garliclike taste and odor on the breath and skin that may last up to 7 hours after treatment. Long-term treatment has caused cataracts in animal studies, but this side effect has not appeared in humans. Blood tests, including a complete blood count and kidney and liver function tests, should be done about every 6 months.
Pentosan Polysulfate Sodium (Elmiron)
This first oral drug developed for IC was approved by the FDA in 1996. In clinical trials, the drug improved symptoms in 30 percent of patients treated. Doctors do not know exactly how the drug works, but one theory is that it may repair defects that might have developed in the lining of the bladder.
The FDA-recommended oral dosage of Elmiron is 100 milligrams (mg), three times a day. Patients may not feel relief from IC pain for the first 4 months. A decrease in urinary frequency may take up to 6 months. Patients are urged to continue with therapy for at least 6 months to give the drug an adequate chance to relieve symptoms. If 6 months of Elmiron therapy provides no benefit, it is reasonable to stop the drug.
Elmiron�s side effects are limited primarily to minor gastrointestinal discomfort. A small minority of patients experienced some hair loss, but hair grew back when they stopped taking the drug. Researchers have found no negative interactions between Elmiron and other medications.
Elmiron may affect liver function, which should therefore be monitored by the doctor.
Because Elmiron has not been tested in pregnant women, the manufacturer recommends it not be used during pregnancy, except in the most severe cases. Because Elmiron has mild blood-thinning effects, it should be discontinued prior to planned surgery.
Other Oral Medications
Aspirin and ibuprofen may be a first line of defense against mild discomfort. Doctors may recommend other drugs to relieve pain.
Some people have experienced improvement in their urinary symptoms by taking tricyclic antidepressants or antihistamines. A tricyclic antidepressant called amitriptyline (Elavil) may help reduce pain, increase bladder capacity, and decrease frequency and nocturia. Some people may not be able to take it because it makes them too tired during the day. In people with severe pain, narcotic analgesics such as acetaminophen (Tylenol) with codeine or longer-acting narcotics may be necessary.
As all drugs can have side effects, please consult a doctor before using any drug for an extended amount of time.
Electrical Nerve Stimulation
Mild electrical pulses can be used to stimulate the nerves to the bladder�either through the skin or with an implanted device. The method of delivering impulses through the skin is called transcutaneous electrical nerve stimulation (TENS). With TENS, mild electric pulses enter the body for minutes to hours, two or more times a day either through wires placed on the lower back or just above the pubic area�between the navel and the pubic hair�or through special devices inserted into the vagina in women or into the rectum in men. Although scientists do not know exactly how TENS relieves pelvic pain, it has been suggested that the electrical pulses may increase blood flow to the bladder, strengthen pelvic muscles that help control the bladder, or trigger the release of substances that block pain.
TENS is relatively inexpensive and allows people with IC to take an active part in treatment. Within some guidelines, the patient decides when, how long, and at what intensity TENS will be used. It has been most helpful in relieving pain and decreasing frequency in people with Hunner�s ulcers. Smokers do not respond as well as nonsmokers. If TENS is going to help, improvement is usually apparent in 3 to 4 months.
A person may consider having a device implanted that delivers regular impulses to the bladder. A wire is placed next to the tailbone and attached to a permanent stimulator under the skin. The FDA has approved this device, marketed as the Inter-Stim system, to treat urge incontinence, urgency-frequency syndrome, and urinary retention in people for whom other treatments have not worked.
No research has been done yet with diet and IC, but many IC patients find that coffee (including decaf), alcohol, tomatoes, hot spices, chocolate, caffeinated and citrus beverages, and high-acid foods may contribute to bladder irritation and inflammation. Some people also note that their symptoms worsen after eating or drinking products containing artificial sweeteners. Interstitial cystitis dietary guidelines dovetail easily with the diet for Irritable Bowel Syndrome.
Eliminating various items from the diet and reintroducing them one at a time may determine which, if any, affect a person�s symptoms. However, maintaining a varied, well-balanced diet is important.
Many people feel smoking makes their symptoms worse. How the by-products of tobacco that are excreted in the urine affect IC is unknown. Smoking, however, is a major cause of bladder cancer. One of the best things smokers can do for their bladder and their overall health is to quit.
Many patients feel that gentle stretching exercises help relieve IC symptoms. Yoga may be especially beneficial in this regard.
People who have found adequate relief from pain may be able to reduce frequency by using bladder training techniques. Methods vary, but basically patients decide to empty their bladder at designated times and use relaxation techniques and distractions to keep to the schedule. Gradually, they try to lengthen the time between scheduled voids. A diary in which to record voiding times is helpful in keeping track of progress.
New evidence indicates that certain types of physical therapy, when administered by an experienced physical therapist, may improve IC symptoms. Patients should discuss this option with their health care provider.
Surgery should be considered only if all available treatments have failed and the pain is disabling. Many approaches and techniques are used, each of which has advantages and complications that should be discussed with a surgeon. A doctor may recommend consulting another surgeon for a second opinion before taking this step. Most surgeons are reluctant to operate because some people still have symptoms after surgery.
People considering surgery should discuss the potential risks and benefits, side effects, and long- and short-term complications with a surgeon, their family, and people who have already had the procedure. Surgery requires anesthesia, hospitalization, and weeks or months of recovery. As the complexity of the procedure increases, so do the chances for complications and failure.
People should check with their doctor to locate a surgeon experienced in performing specific procedures.
Two procedures � fulguration and resection of ulcers � can be done with instruments inserted through the urethra. Fulguration involves burning Hunner�s ulcers with electricity or a laser. When the area heals, the dead tissue and the ulcer fall off, leaving new, healthy tissue behind. Resection involves cutting around and removing the ulcers. Both treatments are done under anesthesia and use special instruments inserted into the bladder through a cystoscope. Laser surgery in the urinary tract should be reserved for people with Hunner�s ulcers and should be done only by doctors with the special training and expertise needed to perform the procedure.
Another surgical treatment is augmentation, which makes the bladder larger. In most of these procedures, scarred, ulcerated, and inflamed sections of the patient�s bladder are removed, leaving only the base of the bladder and healthy tissue. A piece of the patient�s colon is then removed, reshaped, and attached to what remains of the bladder. After the incisions heal, the patient may void less frequently. The effect on pain varies greatly; IC can sometimes recur on the segment of colon used to enlarge the bladder.
Even in carefully selected patients (those with small, contracted bladders), pain, frequency, and urgency may remain or return after surgery, and they may have additional problems with infections in the new bladder and difficulty absorbing nutrients from the shortened colon. Some patients become incontinent, while others cannot void at all and must insert a catheter into the urethra to empty the bladder.
Bladder removal, called a cystectomy, is another, infrequently used surgical option. Once the bladder has been removed, different methods can be used to reroute the urine. In most cases, ureters are attached to a piece of colon that opens onto the skin of the abdomen. This procedure is called a urostomy and the opening is called a stoma. Urine empties through the stoma into a bag outside the body. Some urologists are using a second technique that also requires a stoma but allows urine to be stored in a pouch inside the abdomen. At intervals throughout the day, the patient puts a catheter into the stoma and empties the pouch. Patients with either type of urostomy must be very careful to keep the area in and around the stoma clean to prevent infection. Serious potential complications may include kidney infection and small bowel obstruction.
A third method to reroute urine involves making a new bladder from a piece of the patient�s colon and attaching it to the urethra. After healing, the patient may be able to empty the newly formed bladder by voiding at scheduled times or by inserting a catheter into the urethra. Only a few surgeons have the special training and expertise needed to perform this procedure.
Even after total bladder removal, some patients still experience variable IC symptoms in the form of phantom pain. Therefore, the decision to undergo a cystectomy should be made only after testing all alternative methods and seriously considering the potential outcome.
Removing the bladder is not always done in patients with severe disease. Some urologists recommend rerouting urine to a piece of bowel connected to the abdominal wall. Urine is then collected in an external bag that is emptied periodically. While this procedure may or may not improve pelvic pain, it can decrease frequency and improve quality of life for patients who experience frequent urges to urinate.
What is the connection between IC and Irritable Bowel Syndrome (IBS)?
IC and IBS seem to be connected disorders as a result of shared nerves and neurosensitivity in the gut. The nerves in the bladder and bowel influence each other; when the bowel becomes irritated, the bladder also shows signs of irritation and vice versa.
There is evidence that if a patient sustains an injury or trauma to one part of the pelvis, other nearby pelvic regions can also show signs of neurosensitivity. This may be why women with either IC or IBS can also struggle with vulvodynia (chronic vulvar pain), while men may struggle with prostatodynia (chronic inflammation of the prostate).
Interstitial Cystitis / Painful Bladder Syndrome Research
Although answers may seem slow in coming, researchers are working to solve the painful riddle of IC. The NIDDK�s investment in scientifically meritorious IC research across the United States has grown considerably since 1987. The Institute now supports research that looks at various aspects of IC, such as how the components of urine may injure the bladder and what role organisms identified by nonstandard methods may have in causing IC. In addition to funding research, the NIDDK sponsors scientific workshops where investigators share the results of their studies and discuss future areas for investigation.
Interstitial Cystitis information provided by the National Digestive Diseases Information Clearinghouse, NIH
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