Kidney pain is also caused due to pyelonephritis or kidney infection. Pain occurs due to infection and inflammation of the capsule that surrounds the kidney. Unlike back pain, both these types of kidney pain are accompanied with fever, nausea and vomiting. Other potential causes of kidney pain include cancer and bleeding inside the kidneys due to injury. Dull aching pain in kidney can be caused due to polycystic kidney disease or gradual blockage of urine flow.
Sustain is defined as to support something or to endure a trial or hardship. 1  An example of sustain is for a foundation to support the house. 2  An example of sustain is to survive days without food or water.
maintain - maintain by writing regular records; keep a diary; maintain a record; keep notes keep. record, enter, put down - make a record of; set down in permanent form. 8. maintain - state or assert; He maintained his innocence defend. vindicate - maintain, uphold, or defend; vindicate the rights of the citizens affirm - say yes to. 9. maintain - support against an opponent; The appellate court upheld the verdict uphold. vindicate, justify - show to be right by providing justification or proof; vindicate a claim