How does kidney pain feel?

Depends on cause: Flank pain due to an obstructing stone can be of sudden onset, very sharp, excruciating ; can come in waves (colic). Worse than childbirth. Pain from pyelonephriits (infection) can vary from dull ache to severe ache.; associated with fever.Kidney trauma . All can b associated with nausea ; vomiting. Polycystic kidney pain, tumor chronic hydronephrosis or trauma can all cause dull tomoderate pain.