What is acute cystitis?
Acute cystitis is a sudden inflammation of the bladder. Most
of the time, a bacterial infection causes it. This infection is commonly
referred to as a urinary tract infection (UTI). Irritating hygiene products, a
complication of certain diseases, or a reaction to certain drugs can also cause
The treatment for acute cystitis due to a bacterial
infection involves antibiotics. The treatment for noninfectious cystitis
depends on the underlying cause.
What are the symptoms of acute cystitis?
The symptoms of acute cystitis come on suddenly and can be
very uncomfortable. The most common symptoms include:
- a frequent and strong urge to urinate even after
you empty your bladder, which is called urgency
- a burning sensation when urinating, which is called
- strong-smelling urine
- cloudy urine
- a sensation of pressure, bladder fullness, or
cramping in the lower abdomen or back
- a low fever
- the presence of blood in the urine
What causes acute cystitis?
The urinary system consists of the:
The kidneys filter waste from your blood and create urine.
The urine then travels through tubes called ureters to the bladder. The bladder
stores the urine until you’re ready to urinate. Urine then travels out of the
body through a tube called the urethra.
The most frequent cause of acute cystitis is an infection of
the bladder caused by the bacteria Escherichia
coli. The bacteria enter the urethra and then travel to the bladder. Once
in the bladder, the bacteria stick to the bladder wall and multiply. This leads
to inflammation of the tissue lining the bladder. The infection can also spread
to the kidneys.
Although infections are the most common causes of acute
cystitis, several other factors can cause the bladder and lower urinary tract
to become inflamed. These include:
- certain medications, particularly the chemotherapy
drugs cyclophosphamide and ifosfamide
- radiation treatment of the pelvic area
- the long-term use of a catheter
- sensitivities to certain products, such as feminine
hygiene sprays, spermicidal jellies, or lotions
- complications of other conditions, including diabetes,
kidney stones, or an enlarged prostate
What are the risk factors for acute cystitis?
Women are more prone to acute cystitis than men because
their urethra is shorter and closer to the anal area, which can harbor harmful
bacteria. This makes it easier for bacteria to get to the bladder. More than half
of all women experience at least one UTI in their lifetime.
The following factors can also increase your risk of acute
- engaging in sexual activity
- using certain types of birth control such as
diaphragms and spermicidal agents
- wiping your genitals from the back towards the
front after using the bathroom
- experiencing menopause because less estrogen
causes changes in the urinary tract that make you more susceptible to infection
- being born with abnormalities in the urinary
- having kidney stones
- having an enlarged prostate
- using antibiotics frequently or for prolonged
- having a condition that impairs the immune
system, such as HIV
- having diabetes
- being pregnant
- using a catheter
- having a recent urinary exam
- having urinary surgery
How is acute cystitis diagnosed?
Your doctor will ask about your symptoms and your medical
history. Be sure to tell your doctor when your symptoms started and if anything
you do makes them worse. Also, inform your doctor of any medications you’re
taking or if you’re pregnant.
Your doctor might recommend certain tests including:
If your doctor suspects an infection, they’ll likely ask for
a sample of urine to test for bacteria or blood cells. Another test called a
urine culture might be done in a laboratory to identify the exact type of
bacteria causing the infection.
Your doctor will insert a thin tube with a light and a camera
called a cystoscope into your bladder through your urethra to look at the
urinary tract for signs of inflammation.
This type of test usually isn’t required, but if your doctor
can’t figure out what’s causing your symptoms, imaging might be useful. Imaging
tests, such as an X-ray or ultrasound, can help your doctor see if there’s a
tumor or structural abnormality causing the inflammation.
How is acute cystitis treated?
Treatment involves a course of antibiotics for three to ten days
if the cystitis is caused by a bacterial infection. Your symptoms will likely
go away in a day or two, but you should continue taking the antibiotics for
however long your doctor prescribed. It’s important to make sure the infection
is completely gone so that it doesn’t come back. Your doctor may also prescribe
a urinary tract pain reliever such as phenazopyridine for the first couple of
days to help reduce your discomfort while the antibiotics take effect.
Treatment for noninfectious types of acute cystitis depends
on the exact cause. For example, if you’re allergic or sensitive to certain
chemicals or products, the best treatment is to avoid these products altogether.
Pain medications are available to treat cystitis caused by chemotherapy or
Managing the symptoms
If you’re experiencing the symptoms of acute cystitis, you
can help ease your discomfort at home while you wait for antibiotics or other
treatments to work. Some tips for coping at home include the following:
- Drink lots of water.
- Take a warm bath.
- Apply a heating pad to the abdomen.
- Avoid coffee, citrus juices, spicy foods, and
Many people drink cranberry juice or take cranberry extract
supplements to prevent UTIs or to ease the symptoms. Some evidence suggests
that cranberry juice and cranberry products can fight infections in the bladder
or reduce discomfort, but the evidence isn’t conclusive.
One recent study
in prostate cancer patients with cystitis caused by radiation treatment found
that cranberry supplements significantly reduced urinary pain and burning
compared to men who didn’t take the supplement. You can drink cranberry juice
if you think it helps. However, it’s good to be careful about how much you
drink since fruit juices are often very high in sugar.
What are the complications associated with acute cystitis?
Most cases of acute cystitis are easily treated with an
antibiotic. However, you should seek immediate medical attention if you have
any of the symptoms of a kidney infection. The symptoms of a kidney infection
- severe pain in the back or side, which is called
- a fever
What is the outlook?
Most cases of acute cystitis go away without complications
if they’re treated.
A kidney infection is rare, but it can be dangerous if you
don’t get treatment for it right away. People with a weakened immune system or
an existing kidney condition are at a higher risk of this type of complication.
How can acute cystitis be prevented?
You can’t always prevent acute cystitis. Follow these tips
to reduce the risk of bacteria entering your urethra and to prevent irritation
of your urinary tract:
- Drink plenty of water to help you urinate more
frequently and flush bacteria out of your urinary tract before an infection
- Urinate as soon as possible after sexual
- Wipe from front to back after a bowel movement
to prevent bacteria from spreading to the urethra from the anal region.
- Avoid using feminine products near the genital
area that can irritate the urethra, such as douches, deodorant sprays, and
- Maintain personal hygiene and wash your genitals
- Take showers instead of baths.
- Avoid using birth control methods that can lead
to bacterial growth, such as diaphragms or spermicide-treated condoms.
- Don’t delay using the toilet for too long if you
have the urge to urinate.
You can also include cranberry juice or cranberry
supplements in your diet, but the evidence for how effective this is for
preventing acute infective cystitis is inconclusive.