Don't ignore this burning sensation

What is a urinary bladder infection?

A urinary bladder infection (cystitis) is an inflammation of the bladder, most often caused by bacteria. The urethra and occasionally the ureters are frequently involved. Because the bladder and urethra are inflamed, this form is classified as a lower urinary tract infection. Upper urinary tract infections, such as pyelonephritis, affect the kidneys.

In most cases a bladder infection is uncomplicated. Without treatment, however, it can lead to more serious infections such as a kidney infection.

Bladder infections mainly affect women because their urethra is shorter and pathogens can reach the bladder more quickly. The proximity of the urethral opening to the anus also favours these infections. Men are less commonly affected, but the risk rises with age, particularly due to changes in the prostate or urinary tract.

Which symptoms are typical for a bladder infection?

A bladder infection usually presents with a strong urge to urinate, often accompanied by burning pain when passing urine. The urge can be very intense, yet only small amounts of urine are passed. This is often accompanied by lower abdominal pain, sometimes cramp‑like in the bladder area.

Another typical symptom is cloudy urine with an unpleasant smell. In some cases the urine may also contain blood. This is seen as microhaematuria, a small amount of blood not visible to the naked eye. As the inflammation progresses, back pain may occur, especially if the infection spreads to the kidneys.

In some people a bladder infection can also lead to incontinence, which is particularly common in older women. It is also not uncommon for the urge to urinate to appear suddenly and very urgently, making it difficult to reach the toilet in time. This phenomenon is called urge incontinence. In rare situations a mild fever may occur.

Symptoms can vary in severity from person to person. It is also possible that some of these signs do not appear at all. If the infection spreads to neighbouring areas such as the vagina or prostate, additional complaints may occur, such as increased discharge in women.

What are the causes of a bladder infection?

A bladder infection is most often caused by intestinal bacteria, particularly Escherichia coli, which travel via the urethra into the bladder. Poor hygiene, for example wiping from back to front, can increase the risk of infection.

There are several risk factors that favour a bladder infection. Insufficient fluid intake, for example, causes urine to remain in the bladder longer and promotes bacterial growth. Hormonal changes, for instance during pregnancy or menopause, also increase the infection risk by altering the mucous membranes.

Another important risk factor is sexual intercourse, known to trigger so‑called "honeymoon cystitis". Bacteria can easily enter the urinary tract. Likewise, permanent medical devices such as urinary catheters and incomplete bladder emptying in neurological disorders increase the infection risk.

Other risk factors include diabetes mellitus, a weakened immune system, stress, chilling and incorrect intimate hygiene. Certain medications or antibiotic therapy that disturb the natural bacterial balance also favour infections. In rare cases fungi, viruses or parasites can cause a bladder infection.

Is a bladder infection contagious?

In principle a bladder infection is not directly contagious, but it can be transmitted under certain circumstances. The most common cause is contact with bacteria that can infect the bladder. Although the overall risk of transmission is low, indirect spread may occur through improper hygiene. For example, if hands are not washed thoroughly after using the toilet, bacteria can be transferred to towels or door handles. People who then touch these items risk infection if the pathogens reach the intimate area or urinary tract.

The likelihood of acquiring a bladder infection from public toilets is also minimal, as bacteria are mainly spread via contaminated surfaces like door handles or soap dispensers. Regular and thorough hand washing is essential to protect yourself and others.

Regarding sexual activity as a route of transmission, the risk can be significantly reduced by good intimate hygiene and the use of condoms. Urinating after sex can also help prevent a bacterial urinary tract infection.

When is a bladder infection chronic?

A bladder infection is considered chronic if at least two infections occur within six months or three or more infections occur within one year. It can then be difficult to distinguish a relapse of a previous infection from a new infection. The treatment of chronic bladder infection is nonetheless similar to that of an acute infection. An accurate diagnosis is especially important to determine whether further diagnostic measures are required.

One reason bladder infections can become chronic is the ability of bacteria to adhere to the bladder wall and form a protective layer (biofilm). Within this biofilm the bacteria are protected from the immune system and antibiotics. This means they do not always flare up immediately but can become active again after some time, leading to recurrent infections.

The bacterium Gardnerella vaginalis plays a special role here, as it can attack the bladder wall and release E. coli bacteria that cause the inflammation.

What helps with a bladder infection: useful tips

• At the first signs, consistently drink two to three litres a day, preferably still water or unsweetened herbal teas, to thoroughly flush the bladder. Take the urge to urinate seriously and go to the toilet regularly so microbes do not ascend.
• Use bladder and kidney teas from the pharmacy containing ingredients such as birch leaves, goldenrod or orthosiphon. These contain plant compounds that not only act as diuretics but also support the healing of the urinary tract.
• Prepare a bearberry leaf tea and drink it ideally in the evening so that the antibacterial compound arbutin can accumulate in the bladder overnight. Note, however, that these teas should not be used for more than one week and are not suitable for children or pregnant women.
• To relax the lower abdomen and relieve cramp‑like pain, use a hot water bottle or a cherry‑stone pillow. Warm socks can also help, as cold feet can further irritate the bladder.
• Take a sitz bath with chamomile or horsetail to soothe local inflammation. Add the medicinal herbs to warm water and bathe for about 15 minutes. This is relaxing and anti‑inflammatory.
• Also place a hot water bottle on the back at kidney level, not just on the lower abdomen. This keeps the entire urinary tract area warm and relieves tension in the bladder muscles.
• Drink a glass of apple‑cider‑vinegar water three times a day by stirring a tablespoon of apple cider vinegar into lukewarm water. This home remedy supports kidney function and its acidity has a mild antibacterial effect.
• For prevention and acute treatment you can use D‑mannose powder or tablets, as this sugar specifically binds E. coli bacteria and prevents them from attaching to the bladder lining. Studies suggest the effect may be similar to that of antibiotics.
• Use anti‑inflammatory foods such as fresh ginger, celery stalks or horseradish. You can prepare them as a tea or consume them raw grated. They contain antibacterial mustard oils that fight pathogens and strengthen the immune response.
• Drink a glass of cranberry, lingonberry or blueberry juice daily. Although the effect is not unequivocally proven scientifically, it can make it harder for bacteria to adhere to the bladder wall.
• Avoid tight, synthetic underwear, as it traps moisture and encourages bacterial growth. Instead, wear breathable cotton underwear and change it daily.
• Also be sure to change wet swimwear quickly after swimming to avoid chilling the pelvic area. Cold, damp textiles are a common cause of cystitis.
• You can regulate the pH of the urine with baking soda by dissolving half a teaspoon in a glass of water. This makes the urine more alkaline and hinders bacterial growth. However, this method should only be used temporarily.
• If bladder infections recur, see a doctor to avoid complications. Support the therapy with bladder tea and an appropriate preparation.

Bladder infections are among the most common urinary tract disorders but are usually uncomplicated. It is important to react early and consistently apply supportive measures.