What is the cause of urinary tract infection?

Many reasons. it is a very broad question. Girls before puberty suffer from it, young adult women suffer from it ( honeymoon cystitis), older women suffer from it ( post menopausal). Men suffer from it especially with stones, bladder tumors.These are just a few examples. Hence if the urinary infection is recurrent, it must be investigated.
Bacteria. UTI are usually due to an overgrowth of bacteria in the bladder. Common causes are intercourse, delayed emptying, diabetes, stones, and possibly menopause.

Related Questions

What can cause a urinary tract infection?

Obstruction, trauma. A urinary tract infection also called as cystitis are common and usually uncomplicated except in pregnant females. Uti starts by colonization of vagina by colonic bacteria ; which then migrate and ascend into the bladder. Recurrent infections are more common in patients who have a abnormality of the urinary tract, kidney stones and or drug resistant bacteria. Read more...
Many causes. Utis are caused by bacteria getting into bladder and multiplying. Bacteria can enter during sex and hence reason to urinate after sex. Toilet hygiene, not wiping front to back, also keeping thighs closed which traps urine in vagina. Bubble-bath and tubs rather than showers. Thong and non-cotton underwear. Constipation. Withholding urination, drinking too little or urinating often enough. Read more...

What are the causes of a urinary tract infection?

Bacteria via urethra. Reach the bladder and multiply which results in a uti. Bacteria can reach bladder during sex, hence advice to urinate after sex. Constipation, bubble bath, synthetic (non cotton) underwear or thongs, bathing rather than taking showers, incomplete badder emptying, urinary retention & infrequent voiding menopause can all predispose to utis. Read more...

What are the causes of a urinary tract infection?

Variable. Uti's are very common, especially in young sexually active women. Causes inlcude include sexual activity, poor groin hygiene, use of certain medications or antibiotics, lack of adequate water intake, and abnormal urinary anatomy (congenital or acquired such as thru surgery). If one is experiencing frequent uti's an evaluation is recommended to possibly correct the abnormality if one is identified. Read more...
Many ways. Not urinating after sex, allowing bacteria which reached bladder during act to multiply causing uti, using bubble-bath and tub baths rather than taking a shower, severe constipation, sub-optimal toilet hygiene- not wiping front to back or holding thighs together with urinating + trapping urine behind labia, witholding urination, thongs and non-cotton underwear, not drinking or urinating enough. Read more...

What could cause a urinary tract infection in men?

Several things. The most common is incomplete emptying of the bladder because of an enlarged prostate. Read more...
Variable. There are multiple causes for a UTI in men depending on the age group. In younger men, it is usually from sexual activity or scarring in the urethra (stricture). In older men, it is usually from an enlarged prostate, urinary retention, bladder stones, or strictures. Read more...
Urinary stasis. Inadequate urine drainage favors urinary tract infection. Congenital abnormalities in urinary tract (upj obstruction, posterior urethral valve, vesicoutereal reflux), kidney stone, and enlarged prostate are examples. Read more...
Not normal in men... Though urinary tract infections commonly occur in women; since the urethra in men is longer and farther from the anus, uti's in men aren't common. However, uti's in men all require a work-up to find the underlying cause so it can be addressed: 1.Sexually transmitted infection, 2.Anatomical/physiologic cause (bacteria backwashes), or 3.Obstruction causing urine retention( e.g. Enlarged prostate). Read more...
Bacteria in urethra. Most utis are result of bacteria enering the urethra and working their way up to the prostae & bladder. Anthing causing urinary stasis or obstruction, like man enlarged prostae or urthral stricture will promote a uti. Chlamydia and mycoplasma can be sexually transmitted and cause utis. Uncircumcised, particulary men with poor hygiene, are more likely to get utis than those circumcised circumcised. Read more...

What are the causes of a urinary tract infection and what kind of medicine can I take for the pain?

Multiple causes. Most urinary infections are bacterial. Some are ascending infections through the urethra, especially in women, other are due to seeding of the kidney through blood. Some urinary infections are prompted by obstruction to the flow of urine. The medicine needs to be tailored to the organism causing the infection and it is not a matter for self-care. Please see your doctor for proper antibiotic. Read more...

What are the causes of consistent urinary tract infections?

Find a specialist. (urologist or urogynecologist) who is interested in evaluating women with this problem. Uti is not always sucessfully treated just with antibiotics and there are other causes of bladder symptoms besides urinary infection. Hope this helps. Read more...

What could be the causes of urinary tract infections in elderly men?

UTI isUnusual in men. The infection usually tracks upwards through the urethra. Causes may include sexual activity, non circumcision with suboptimal hygiene, or unknown. In men however, a UTI may warrant ultrasound to rule out a structural abnormality like a stone since UTI is not common in men like in women. Read more...
Enlarged prostate. Prostatic enlargement can lead to progressive urethral + bladder neck obstruction leading to impaired bladder drainage + various degrees of urinary retention. Also can develop bladder diverticula (outpouchings) from increased voiding pressures in bladder, which do not empty with urination. Retained urine "stagnates" and is fertile ground for utis. Read more...