causes of flank pain on both sides
If you have persistent pain, you should always consult your physician. However, flank pain most commonly results from one of three causes: urinary tract infection (UTI), kidney stones, and musculoskeletal problems like a muscle strain or pinched nerve. The kidneys are your bodyâs filters.
Renal disorders. Pain in flanks is one of the typical characteristics associated with kidney stones. The pain is sudden, which arises in the flanks and radiates to the groin in such cases. Polycystic kidney diseases, infection in the kidney, abscess and even kidney cancer may cause flank pan.