Lloyd's sign is a sign of

renal calculus Kidney stone disease, also known as nephrolithiasis or urolithiasis, is a crystallopathy where a solid piece of material (kidney stone) develops in the urinary tract. Kidney stones typically form in the kidney and leave the body in the urine s ...

pyelonephritis Pyelonephritis is inflammation of the kidney, typically due to a bacterial infection. Symptoms most often include fever and flank tenderness. Other symptoms may include nausea, burning with urination, and frequent urination. Complications may ...

when pain is elicited by deep

percussion A percussion instrument is a musical instrument that is sounded by being struck or scraped by a beater including attached or enclosed beaters or rattles struck, scraped or rubbed by hand or struck against another similar instrument. Exc ...

in the back between the 12th rib and the spine. It is closely related to

costovertebral angle tenderness Costovertebral angle (CVA) tenderness is pain that results from touching the region inside of the costovertebral angle.Bickley, Lynn S., Peter G. Szilagyi, and Richard M. Hoffman. Bates' guide to physical examination and history taking. Philadelph ...

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

Nephrology Abdominal pain {{med-sign-stub