Final answer:
The most common cause of lower tract hematuria is urinary tract infections, often resulting from bacterial contamination such as Escherichia coli. Kidney stones are another frequent cause, especially in males, leading to hematuria due to damage to the urinary tract lining.
Step-by-step explanation:
The most common cause of lower tract hematuria, which is the presence of blood in the urine, can often be traced back to issues within the urinary system. One prevalent attributable condition is urinary tract infections (UTIs), which may include cystitis or infection of the bladder. Escherichia coli, a bacteria primarily associated with fecal contamination, is a frequent cause. In males, hematuria may be linked with conditions such as an enlarged prostate or kidney stones. Kidney stones can result in hematuria due to damage they cause to the urinary tract lining when they move or become lodged. Urinalysis is a useful tool in diagnosing causes of hematuria, helping to identify not only bleeding but also other renal diseases and dysfunctions.