Why does kidney infection cause blood in urine?

A kidney infection often begins when bacteria travel upward from the bladder. As the body responds, the lining of the urinary tract can become swollen and tender. Small amounts of blood may then enter the urine, sometimes along with burning when urinating, frequent urination, pain in the back or side, fever or nausea. Blood in Urine is a very common presentation of Kidney Infection. It is still not specific to infection, so visible blood needs assessment.

Contact a clinician promptly for urinary symptoms with blood in the urine, particularly when you also feel unwell. A urine sample can help identify infection, and treatment may include prescribed antibiotics. Take any prescribed medicine exactly as directed and finish the course unless the prescriber tells you otherwise. Rest, drink fluids if you can keep them down, and seek advice before using medicines that may not suit your kidneys.

Seek urgent medical care for fever with shaking chills, severe side or back pain, vomiting that prevents fluids, confusion, marked weakness, pregnancy, or trouble passing urine. These signs can indicate a more serious urinary infection or another urgent problem. Do not wait for the urine colour to change back before getting help.

Ask whether you need a urine culture, whether there are signs of a stone or blockage, and when to return if symptoms do not improve. Mention diabetes, pregnancy, kidney disease, allergies and every medicine you take, including non-prescription products.