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A Kidney Infection Does Not Require Earlier Cystitis

A previous bladder infection is not a requirement for a kidney infection. Have concerning symptoms assessed.

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In this article
  1. Myth: a bladder infection must happen first
  2. Describe what is happening now

If you suspect a kidney infection, get urgent medical advice for fever or shivering, pain in the lower tummy or back just under the ribs, blood in your urine, vomiting, no urine all day, or pregnancy. In England, contact your GP urgently or NHS1 111; elsewhere, use local urgent care.1

Myth: a bladder infection must happen first

NHS1 guidance says a kidney infection is often caused by cystitis, but it can also occur without cystitis. Not having noticed an earlier bladder infection does not rule it out.1

Describe what is happening now

A clinician needs to assess the current symptoms. Tell them where you have pain, whether you feel sick or shivery, and any changes in urination. Those observations are information for assessment, rather than a way to diagnose yourself.1

Laugh, Sneeze, Jump includes an appointment prep sheet. Use it to organize questions for your clinician; getting care comes first. See the book.

This article is for general educational purposes only and is not medical advice. It isn't a substitute for diagnosis or treatment from a qualified healthcare professional who knows your health history. Please don't ignore professional advice or delay getting care because of something you read here. If you think you may be having a medical emergency, call 911 or your local emergency number right away. Girl Playbook does not endorse any specific product, test, or provider.

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Girl Playbook sells this book. It provides education and worksheets, not individualized medical care.

Sources

The research behind this article, in the order it’s cited. How we source our articles.

  1. NHS, 2025Kidney infection (opens in a new tab)abcdef

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