Lloyd's sign

Lloyd's sign is a sign of renal calculus or pyelonephritis when pain is elicited by deep percussion in the back between the 12th rib and the spine. It is closely related to costovertebral angle tenderness in that the area of percussion is the same. However, Lloyd's sign is defined as positive costovertebral angle tenderness along with the absence of tenderness with normal pressure.

Symptoms and signs: urinary system (R30–R39, 788)

Pain	Renal colic Costovertebral angle tenderness Dysuria Vesical tenesmus

Control	Urinary incontinence Enuresis Diurnal enuresis Giggling Nocturnal enuresis Post-void dribbling Stress Urge Overflow Urinary retention

Volume	Oliguria Anuria Polyuria

Other	Lower urinary tract symptoms Nocturia Urinary urgency Urinary frequency Extravasation of urine Extrarenal uremia Urinoma

Eponymous	Addis count Brewer infarcts Murphy's punch sign Lloyd's sign

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