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How to manage peritonitis-related lower left back pain?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hi doctor,

I am a 50-year-old with a weight of 84 kilograms and a height of five feet six inches. I have severe pain in the lower left back at night. It is present between the posterior ribs above the hips. It starts about three inches from the lumbar spine and wraps directly to the left. To know the exact area of reference, it is at the transverse level to the belly bottom. I have used vodka extremely for ten years and stopped it. Now I have been sober for about two and a half months.

Hi,

Welcome to icliniq.com.

I can understand the inconvenience. For pain, you can take analgesics, which help reduce pain. You need to do a renal function test along with an abdominal ultrasound to rule out any kidney involvement.

I hope this helps.

Thank you.

Patient's Query

Thank you doctor,

When I lie down on my back, it goes away. It causes awful pain while standing and sitting. Can I have a problem with the left kidney?

Hi,

Welcome back to icliniq.com.

You may have peritonitis. Pain due to a renal cause does not show changes in intensity and posture. Due to peritonitis, changes in pain can occur. An abdominal ultrasound can be done with other routine investigations. It helps to provide a proper diagnosis.

I hope this helps.

Thank you.

Medically reviewed byDr. K. Shobana

Published At January 28, 2021
Reviewed AtOctober 10, 2025

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