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.[1] 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.

References

M.D, Mark E. Williams (2009). Geriatric Physical Diagnosis: A Guide to Observation and Assessment. McFarland. p. 185. ISBN 9780786451609. Retrieved 23 November 2017.

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[1] M.D, Mark E. Williams (2009). Geriatric Physical Diagnosis: A Guide to Observation and Assessment. McFarland. p. 185. ISBN 9780786451609. Retrieved 23 November 2017.

Signs and symptoms relating to the urinary system
Pain	Dysuria Renal colic Costovertebral angle tenderness 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 urgency frequency Extravasation of urine Uremia
Eponymous	Addis count Brewer infarcts Lloyd's sign Mathe's sign