What is the term for a diagnosis of pain from nephrolithiasis (kidney stones)?

Terminology for Pain from Nephrolithiasis

The correct term for pain from nephrolithiasis is "renal colic." 1, 2

Clinical Definition

Renal colic describes the characteristic pain syndrome caused by kidney stones and presents with specific features that distinguish it from other causes of flank pain 1, 2:

• Colicky, wave-like severe pain that occurs in episodes rather than constant 1, 2
• Independent of body position (unlike musculoskeletal pain which worsens with movement) 2
• Radiates into the groin or genitals with abrupt onset 2
• Pain results from ureteral hyperperistalsis in response to stone passage 1

Alternative Diagnostic Terms

While "renal colic" is the standard clinical term, the formal diagnosis can be documented as:

• Nephrolithiasis with renal colic 1
• Urolithiasis (broader term encompassing stones anywhere in urinary tract) 1
• Acute flank pain secondary to nephrolithiasis 1

Important Clinical Distinctions

Do not confuse renal colic with other causes of flank pain 2:

• Pain occurring after prolonged static positioning suggests musculoskeletal origin involving paraspinal muscles or facet joints 2
• Positional pain that worsens with movement is typically not renal colic 2
• Fever, chills, or systemic signs suggest pyelonephritis or obstructive pyelonephritis rather than uncomplicated renal colic 3, 4

Documentation Considerations

When documenting the diagnosis, specify 1:

• Stone location (upper/middle/lower calyx, renal pelvis, upper/middle/distal ureter) 1
• Stone size (categorized as <5 mm, 5-10 mm, 10-20 mm, >20 mm) 1
• Presence or absence of obstruction (hydronephrosis) 1
• Complications such as infection, which would change the diagnosis to obstructive pyelonephritis 4