Kidney stones are very painful, and people often seek immediate treatment. But not all patients require hospitalization for renal colic, however it is mandatory in some circumstances namely; signs or symptoms of superadded infection requiring emergency treatment to relieve obstruction; unremitting, uncontrolled pain, renal failure relating to an obstructing stone in a single functioning kidney or bilateral calculi and probably in those patients with stones of sufficient size that they are unlikely to pass (i.e. ›5mm).