Guide · 7 min read
Acute Kidney Injury: Sudden Kidney Problems Explained
What acute kidney injury is, how it differs from chronic kidney disease, its causes, and how recovery works.
Acute kidney injury (AKI) is a sudden drop in kidney function over hours or days. Unlike chronic kidney disease, AKI is often reversible when the cause is treated promptly.
Common causes
- ✓Severe dehydration or blood loss
- ✓Serious infections (sepsis)
- ✓Certain medicines, including some painkillers
- ✓Blockage of urine flow (stones or enlarged prostate)
Symptoms
- ✓Passing less urine
- ✓Swelling in legs or face
- ✓Fatigue and confusion
- ✓Nausea and shortness of breath
Treatment and recovery
Care focuses on the cause, fluids and monitoring. Some patients need short-term dialysis. Many recover full function, especially with early treatment.
Frequently Asked Questions
Is AKI the same as chronic kidney disease?
No. AKI is sudden and often reversible; CKD is gradual and usually permanent. Repeated or severe AKI can lead to CKD.
Can painkillers cause kidney failure?
Yes, certain NSAIDs, especially at high doses or with dehydration, can cause or worsen kidney injury.
Sources
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This page is for general education only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified doctor about your specific condition.