The term "kidney problem" refers to any issue or condition that affects the proper functioning of the kidneys. The kidneys are essential organs in the body responsible for filtering waste products and excess fluids from blood, regulating electrolyte balance, maintaining blood pressure, and stimulating red blood cell production through the production of erythropoietin. When there is a problem with the kidneys, it can lead to various health issues such as acute or chronic kidney disease, kidney infections, polycystic kidney disease, or kidney stones. Kidney problems are typically diagnosed through blood and urine tests, imaging studies like ultrasound or CT scans, and may be managed with medications, lifestyle changes, dialysis, or transplantation depending on the severity of the condition.