Kidney pain usually hurts deep in your back, just under your ribcage, on one or both sides of your spine, and can spread toward your belly or groin. It often feels higher and deeper than typical low back or muscle pain and may come with urinary changes, fever, or nausea.

Where kidney pain is felt

  • Middle-to-upper back, just below the ribs on one or both sides of the spine (the “flank” area).
  • It can radiate to the side of your torso, lower abdomen, or down toward the groin.
  • It usually feels deeper and a bit higher than typical low back “tramp stamp” muscle pain.

What kidney pain feels like

  • Dull, constant ache under the ribs or in the flank, sometimes on just one side.
  • Can become sharp, severe, or wave-like if caused by stones or blockage.
  • Often worsens with gentle pressure over the kidney area and may not change much with bending or twisting.

Kidney pain vs ordinary back pain

  • Kidney pain:
    • Higher up, under the ribs, near the spine or side.
* Deep ache or sharp pain, sometimes moving to the groin or lower belly.

* May come with fever, chills, nausea, vomiting, burning when peeing, blood or cloudiness in urine, or needing to pee more often.
  • Typical muscle/back pain:
    • More often in the lower back, buttocks, or hips, not just under the ribs.
* Changes with movement, lifting, or posture, and usually does not cause urinary symptoms or fever.

When to seek urgent help

Get urgent medical care (ER or same-day doctor) if kidney-area pain is paired with:

  1. Fever, chills, or feeling very unwell.
  2. Burning or pain when peeing, blood in urine, or very cloudy/foul-smelling urine.
  3. Sudden, severe side or back pain that comes in waves or makes it hard to sit still.
  4. Inability to pass urine, or very little urine with increasing pain.

If you have ongoing or worrying pain near your kidneys, especially with any urinary changes, a health professional should examine you and may order urine tests, blood tests, or imaging to find the cause.

Information gathered from public forums or data available on the internet and portrayed here.