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Urinary tract infection (cystitis)

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Bacteria ascend into the bladder — usually harmless, but warning signs like fever and flank pain need immediate assessment.

Also known as: cystitis · urinary tract infection · UTI

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This compilation is for information and replaces neither medical diagnosis nor treatment. If you have symptoms, see a doctor.

Usually a bacterial infection of the bladder — burning when urinating, frequent urge, lower-belly pressure, cloudy or smelly urine. Common in women. Drinking plenty flushes it out; simple cases sometimes clear on their own, otherwise an antibiotic helps. Warning signs of kidney involvement: fever, flank/back pain — then see a doctor promptly.

Levers & pathways

associatedWhen fever and flank pain are added

Fever, chills, a clear sense of illness and a pain in the side of the back mean the infection has reached the kidney. A urine culture then belongs given before the first tablet is taken, and the treatment is urgent.

traditionalCranberry for recurring bladder infections

As unsweetened juice or a preparation daily over months — not as treatment of an acute infection.

studiedDo not hold on, empty regularly

Every complete emptying washes germs out. Holding on for hours gives them time. It works best after intercourse, within half an hour.

studiedThe dipstick alone is often not enough

For simple bladder infections the picture is enough. A urine culture belongs with it in men, in pregnancy, with fever, in children, with repeated infections and when a treatment has not worked.

studiedIn men it is never simple

The short urethra in women makes the infection common there and mostly harmless. In men there is more often something behind it — residual urine with an enlarged prostate, a stone, an inflamed prostate. That belongs investigated.

studiedIn pregnancy it is always treated

Even germs in the urine without any complaints are treated here, because pyelonephritis and a premature birth can arise from it. That is the one exception to the usual restraint.

traditionalWarmth and a sitz bath for the cramps

Warmth on the lower belly and a lukewarm sitz bath ease the cramp while the treatment works. They do not replace it — but the first hours become more bearable.

studiedBurning in a girl with no bacteria in the urine

If pinworms travel forward they cause burning, discharge and itching — while the urine stays clean. The adhesive-strip test in the morning settles it.

studiedWhen burning and blood come from fresh water

After a swim in a lake or river in Africa or the Middle East, burning and blood at the end of passing water can come from a blood fluke. It is treatable, and treatment prevents the late consequences.

studiedWhat the medicine does — and what it does not

Antibiotics kill the bacteria in the bladder; symptoms usually ease within a day. An uncomplicated infection also clears without antibiotics in about half of people, though it takes longer. Both are workable paths — the decision follows the symptoms, not a principle.

studiedNumbers and timeframes

About half of all women have at least one bladder infection in their life, many several. With an antibiotic the symptoms usually ease within a day; without one it takes three to five days longer on average.

studiedDrink, empty, warm

Diluted urine irritates less, frequent emptying carries germs out, warmth relaxes the bladder muscle. With fever, flank pain or blood, do not carry on alone.

Possible complaints

studiedBurning, urgency, small amounts

Pain on passing water, a constant urge, only a little each time, pressure above the pubic bone and cloudy, strong-smelling urine.

studiedFever and a back tender to tapping

Fever above thirty-eight degrees, shivering, nausea and a back tender to tapping on one side mean the kidney is involved. That belongs treated the same day.

studiedIn older people it looks different

Instead of burning: sudden confusion, falls, loss of appetite, withdrawal without fever. A smell alone or germs in the urine without complaints, by contrast, are not treated.

studiedIn children the unexplained fever counts

A baby with fever without a runny nose and cough, a child with belly ache, vomiting, poor drinking or new bedwetting: then the urine belongs checked before waiting.

studiedBlood in the urine belongs to it — and is still rechecked

A bladder infection can turn the urine red. If the blood remains after the treatment or appears without complaints, the search goes on.

studiedBurning on urination

Together with frequent urge and the feeling that little comes. Fever and flank pain do not belong to it — then it has moved higher up.

Blood values

studiedUrine status and culture

The dipstick shows inflammatory cells and nitrite. The culture names the germ and how it behaves towards antibiotics — it belongs given before treating, unless it is a first simple infection.

associatedCRP

Normal or only slightly raised with a simple bladder infection. Clearly raised speaks for the kidney being involved.

studiedCreatinine and eGFR

Belongs alongside with fever, with repeated infections and before some antibiotics whose dose depends on kidney function.

associatedFasting glucose

Sugar in the urine encourages infections. Recurring bladder infections are one of the roads by which an unrecognised diabetes is found.

Nutrients

studiedFluid

A sufficient amount of urine across the day dilutes what would otherwise crystallise or irritate. Spread evenly it works better than in two large portions.

studiedPotassium

With reduced kidney function it rises and becomes dangerous for the heart rhythm; under water tablets it falls. In both directions it belongs measured and not guessed.

associatedVitamin D

With low levels airway infections occur somewhat more often; correcting a deficiency makes sense, a high single dose during the infection does not act on it.

associatedCalcium and oxalate

Cutting out calcium is the wrong route with stones: it binds oxalate already in the bowel. Calcium with the meal instead of between meals is the lever, not avoidance.

associatedZinc

Needed by the defence cells. For lozenges at the start of a cold there are hints of a slightly shortened duration; at a high dose over months zinc lowers copper.

Supplements

traditionalCranberry

Promoted for prevention; limited evidence, may help if prone to recurrence.

infoVitamin D3 (+K2)

Clearly worthwhile and well studied when deficient; fewer data for the wider uses. Fat-soluble — check blood levels at high doses.

Hormones

studiedEstradiol

After menopause the lining becomes thinner and the protective flora recedes — the most common reason for recurrent bladder infections at that age. A local treatment lowers the rate markedly in studies, without acting in the body.

studiedInsulin

Sugar in the urine feeds bacteria. With certain diabetes medicines that excrete sugar through the kidney, urinary and genital infections are therefore more common — that belongs to the reckoning of those medicines.

studiedProgesterone

In pregnancy the ureters widen and urine flows more slowly. This is why a bladder infection climbs to the kidney more often — and why even a symptom-free colonisation is treated then.

Food

studiedFluid intake — the best-studied measure

In a controlled trial women with recurrent infections who drank 1.5 litres more a day had almost half as many episodes over the year. The effect showed over 12 months.

mixedCranberry — the amount decides

Studied are preparations with 36 mg proanthocyanidins a day. Commercial cranberry juices usually contain too little of these and a lot of sugar — the supermarket juice is not the study product.

Alternative approaches — what people use

studiedCranberry

Studied in preventing recurring infections, not in treating the acute one.

traditionalNettle

Traditionally used as a flushing tea; drinking plenty is the basis anyway.

studiedProbiotics

Studied in recurring infections, with mixed results.

Wild herbs — what is traditionally used

traditionalStinging nettle

As a flushing tea traditionally; what matters stays the amount drunk.

traditionalBirch

Birch leaves are the classic flushing remedy of folk medicine.

Essential oils — use and limits

infoCajeput

Traditionally used in a compress over the bladder. A urinary infection with fever, flank pain or in pregnancy belongs treated and not rubbed.

infoTea tree

Common as a sitz bath additive, strongly diluted. It does not belong in the vagina — the lining reacts differently from skin.

TCM — how it is seen there

traditionalBladder meridian

The longest meridian in the body, from the eye over the back to the little toe. The Bladder stands there for excretion and for the back chain at once.

traditionalBL40 · Weizhong

In the hollow of the knee, on the Bladder meridian. Traditionally used for back and bladder — that both lie on the same line is the reason.

Frequencies — what is on file

traditionalCystitis (bladder infection)

Listed values: 5 · 6 · 7 · 8 · 40 · 100 · 174 · 2050 Hz