Acute Cystitis

Cystitis (sis-TIE-tis) is the medical term for inflammation of the bladder. Most of the time, the inflammation is caused by a bacterial infection, and it’s called a urinary tract infection (UTI). A bladder infection can be painful and annoying, and it can become a serious health problem if the infection spreads to your kidneys.

Less commonly, cystitis may occur as a reaction to certain drugs, radiation therapy or potential irritants, such as feminine hygiene spray, spermicidal jellies or long-term use of a catheter. Cystitis may also occur as a complication of another illness.

The usual treatment for bacterial cystitis is antibiotics. Treatment for other types of cystitis depends on the underlying cause.

Symptoms

Cystitis signs and symptoms often include:

  • A strong, persistent urge to urinate
  • A burning sensation when urinating
  • Passing frequent, small amounts of urine
  • Blood in the urine (hematuria)
  • Passing cloudy or strong-smelling urine
  • Pelvic discomfort
  • A feeling of pressure in the lower abdomen
  • Low-grade fever

In young children, new episodes of accidental daytime wetting also may be a sign of a urinary tract infection (UTI). Nighttime bed-wetting on its own isn’t likely to be associated with a UTI.

When to see a doctor

Seek immediate medical help if you have signs and symptoms common to a kidney infection, including:

  • Back or side pain
  • Fever and chills
  • Nausea and vomiting

If you develop urgent, frequent or painful urination that lasts for several hours or longer or if you notice blood in your urine, call your doctor. If you’ve been diagnosed with a UTI in the past and you develop symptoms that mimic a previous UTI, call your doctor.

Also call your doctor if cystitis symptoms return after you’ve finished a course of antibiotics. You may need a different type of medication.

If your child starts having daytime wetting accidents, call your pediatrician.

In otherwise healthy men, cystitis is rare and should be investigated by your doctor.

Causes

Your urinary system includes your kidneys, ureters, bladder and urethra. All play a role in removing waste from your body. Your kidneys — a pair of bean-shaped organs located toward the back of your upper abdomen — filter waste from your blood and regulate the concentrations of many substances. Tubes called ureters carry urine from your kidneys to the bladder, where it’s stored until it exits your body through the urethra.

Bacterial cystitis

UTIs typically occur when bacteria outside the body enter the urinary tract through the urethra and begin to multiply. Most cases of cystitis are caused by a type of Escherichia coli (E. coli) bacteria.

Bacterial bladder infections may occur in women as a result of sexual intercourse. But even sexually inactive girls and women are susceptible to lower urinary tract infections because the female genital area often harbors bacteria that can cause cystitis.

Noninfectious cystitis

Although bacterial infections are the most common cause of cystitis, a number of noninfectious factors also may cause the bladder to become inflamed. Some examples include:

  • Interstitial cystitis. The cause of this chronic bladder inflammation, also called painful bladder syndrome, is unclear. Most cases are diagnosed in women. The condition can be difficult to diagnose and treat.
  • Drug-induced cystitis. Certain medications, particularly the chemotherapy drugs cyclophosphamide and ifosfamide, can cause inflammation of your bladder as the broken-down components of the drugs exit your body.
  • Radiation cystitis. Radiation treatment of the pelvic area can cause inflammatory changes in bladder tissue.
  • Foreign-body cystitis. Long-term use of a catheter can predispose you to bacterial infections and to tissue damage, both of which can cause inflammation.
  • Chemical cystitis. Some people may be hypersensitive to chemicals contained in certain products, such as bubble bath, feminine hygiene sprays or spermicidal jellies, and may develop an allergic-type reaction within the bladder, causing inflammation.
  • Cystitis associated with other conditions. Cystitis may sometimes occur as a complication of other disorders, such as diabetes, kidney stones, an enlarged prostate or spinal cord injuries.

Risk factors

Some people are more likely than others to develop bladder infections or recurrent urinary tract infections. Women are one such group. A key reason is physical anatomy. Women have a shorter urethra, which cuts down on the distance bacteria must travel to reach the bladder.

Women at greatest risk of UTIs include those who:

  • Are sexually active. Sexual intercourse can result in bacteria being pushed into the urethra.
  • Use certain types of birth control. Women who use diaphragms are at increased risk of a UTI. Diaphragms that contain spermicidal agents further increase your risk.
  • Are pregnant. Hormonal changes during pregnancy may increase the risk of a bladder infection.
  • Have experienced menopause. Altered hormone levels in postmenopausal women are often associated with UTIs.

Other risk factors in both men and women include:

  • Interference with the flow of urine. This can occur in conditions such as a stone in the bladder or, in men, an enlarged prostate.
  • Changes in the immune system. This can happen with certain conditions, such as diabetes, HIV infection and cancer treatment. A depressed immune system increases the risk of bacterial and, in some cases, viral bladder infections.
  • Prolonged use of bladder catheters. These tubes may be needed in people with chronic illnesses or in older adults. Prolonged use can result in increased vulnerability to bacterial infections as well as bladder tissue damage.

In men without any predisposing health issues, cystitis is rare.

Complications

When treated promptly and properly, bladder infections rarely lead to complications. But left untreated, they can become something more serious. Complications may include:

  • Kidney infection. An untreated bladder infection can lead to kidney infection, also called pyelonephritis (pie-uh-low-nuh-FRY-tis). Kidney infections may permanently damage your kidneys.

    Young children and older adults are at the greatest risk of kidney damage from bladder infections because their symptoms are often overlooked or mistaken for other conditions.

  • Blood in the urine. With cystitis, you may have blood cells in your urine that can be seen only with a microscope (microscopic hematuria) and that usually resolves with treatment. If blood cells remain after treatment, your doctor may recommend a specialist to determine the cause.

    Blood in the urine that you can see (gross hematuria) is rare with typical, bacterial cystitis, but this sign is more common with chemotherapy- or radiation-induced cystitis.

Tests and diagnosis

If you have symptoms of cystitis, talk to your doctor as soon as possible. In addition to discussing your signs and symptoms and your medical history, your doctor may recommend certain tests, such as:

  • Urine analysis. For a suspected bladder infection, your doctor may ask for a urine sample to determine whether bacteria, blood or pus is in your urine. If so, he or she may request a urine bacterial culture.
  • Cystoscopy. During this test, your doctor inserts a cystoscope — a thin tube with a light and camera attached — through the urethra into your bladder to view your urinary tract for signs of disease.

    Using the cystoscope, your doctor can also remove a small sample of tissue (biopsy) for lab analysis. But this test most likely won’t be needed if this is the first time you’ve had signs or symptoms of cystitis.

  • Imaging. An imaging test usually isn’t needed, but in some instances — especially when no evidence of infection is found — imaging may be helpful. For example, an X-ray or ultrasound may help your doctor discover other potential causes of bladder inflammation, such as a tumor or structural abnormality.

Treatments and drugs

Cystitis caused by bacterial infection is generally treated with antibiotics. Treatment for noninfectious cystitis depends on the underlying cause.

Treating bacterial cystitis

Antibiotics are the first line of treatment for cystitis caused by bacteria. Which drugs are used and for how long depend on your overall health and the bacteria found in your urine.

  • First-time infection. Symptoms often improve significantly within a day or so of antibiotic treatment. However, you’ll likely need to take antibiotics for three days to a week, depending on the severity of your infection.

    No matter what the length of treatment is, take the entire course of antibiotics prescribed by your doctor to ensure that the infection is completely gone.

  • Repeat infection. If you have recurrent UTIs, your doctor may recommend longer antibiotic treatment or refer you to a doctor who specializes in urinary tract disorders (urologist or nephrologist) for an evaluation, to see if urologic abnormalities may be causing the infections. For some women, taking a single dose of an antibiotic after sexual intercourse may be helpful.
  • Hospital-acquired infection. Hospital-acquired bladder infections can be a challenge to treat because bacteria found in hospitals are often resistant to the common types of antibiotics used to treat community-acquired bladder infections. For that reason, different types of antibiotics and different treatment approaches may be needed.

Postmenopausal women may be particularly susceptible to cystitis. As a part of your treatment, your doctor may recommend a vaginal estrogen cream — if you’re able to use this medication without increasing your risk of other health problems.

Treating interstitial cystitis

With interstitial cystitis, the cause of inflammation is uncertain, so there’s no single treatment that works best for every case. Therapies used to ease the signs and symptoms of interstitial cystitis include:

  • Medications that are taken orally or inserted directly into your bladder
  • Procedures that manipulate your bladder to improve symptoms, such as stretching the bladder with water or gas (bladder distention) or surgery
  • Nerve stimulation, which uses mild electrical pulses to relieve pelvic pain and, in some cases, reduce urinary frequency

Treating other forms of noninfectious cystitis

If you’re hypersensitive to certain chemicals in products such as bubble bath or spermicides, avoiding these products may help ease symptoms and prevent further episodes of cystitis.

Treatment of cystitis that develops as a complication of chemotherapy or radiation therapy focuses on pain management, usually with medications, and hydration to flush out bladder irritants.

Source: www.mayoclinic.org

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