Editing Urinary tract infection (section)

==Prognosis==
With treatment, symptoms generally improve within 36{{nbsp}}hours.<ref name=AFP2011/> Up to 42% of uncomplicated infections may resolve on their own within a few days or weeks.<ref name=Review08/><ref name=pmid30296999>{{cite journal | vauthors = Long B, Koyfman A | title = The Emergency Department Diagnosis and Management of Urinary Tract Infection | journal = Emergency Medicine Clinics of North America | volume = 36 | issue = 4 | pages = 685–710 | date = November 2018 | pmid = 30296999 | doi = 10.1016/j.emc.2018.06.003 | s2cid = 52942247 }}</ref>

15–25% of adults and children have chronic symptomatic UTIs including recurrent infections, persistent infections (infection with the same pathogen), a re-infection (new pathogen), or a relapsed infection (the same pathogen causes a new infection after it was completely gone).<ref name="cooper">{{cite journal |vauthors=Cooper TE, Teng C, Howell M, Teixeira-Pinto A, Jaure A, Wong G |date=August 2022 |title=D-mannose for preventing and treating urinary tract infections |journal=The Cochrane Database of Systematic Reviews |volume=2022 |issue=8 |pages=CD013608 |doi=10.1002/14651858.CD013608.pub2 |pmc=9427198 |pmid=36041061}}</ref> Recurrent urinary tract infections are defined as at least two infections (episodes) in a six-month time period or three infections in twelve months, can occur in adults and in children.<ref name="cooper"/>

Cystitis refers to a urinary tract infection that involves the lower urinary tract (bladder). An upper urinary tract infection which involves the kidney is called [[pyelonephritis]]. About 10–20% of pyelonephritis will go on and develop scarring of the affected kidney. Then, 10–20% of those develop scarring will have increased risk of hypertension in later life.<ref name="pmid8692483">{{cite journal | vauthors = MacKenzie JR | title = A review of renal scarring in children | journal = Nuclear Medicine Communications | volume = 17 | issue = 3 | pages = 176–190 | date = March 1996 | pmid = 8692483 | doi = 10.1097/00006231-199603000-00002 | s2cid = 22331470 }}</ref>