Urinary tract infections are caused mainly by body's coli-bacteria (from the gut). More pathogens are Staphylococcus, Lactamins, Proteus and Pseudomonas. When the defenses are weakened, especially in the cold season (hypothermia by to light underwear, cold feet) or e.g. due to purulent teeth, the bladder weakens and the bacteria can more easily wreak their havoc. Especially women (any age) are very often affected by urinary tract infections. In addition to painful urination can cause subsequently chronic inflammation as well as bladder and urinary incontinence. If you suspect a bladder infection (pain in the bladder area, especially during urination, urinary urgency) is always a doctor to consult.