Hello,
The most possible reasons of Your Grandmother complaints are:
Bladder infection which can cause burning or pain with urination, blood in urine, fever and pain in the lower part of abdomen. Urinating more often than usual. Catheter can also lead to infection.
Kidney stones - symptoms like: pain in the back below the ribs, which spreads to the lower abdomen and groin, pain on urination, blood in urine, urinating more often than usual.
Kidney infections - symptoms like chills, pain in the lower back.
Tumor in the kidney - symptoms like blood in urine, loss of appetite,
anemia, lump in abdomen.
In my opinion the doctor should check Your Grandmother to find the reason of blood in urine and pain. Also there is a need to make an urine test to find bacteria. If these are present it can mean an infection. Next steps are: kidney
ultrasound, computer
tomography (CT) scan and
cystoscopy.
Hope I have answered your query. If you have any further questions I will be happy to help