What does Flank Pain feel like?
Flank pain is felt on one or both sides of the body between the lower ribs and the hips. It may be sharp, stabbing, dull, or throbbing depending on the cause. Some people experience flank pain as a deep ache that worsens with movement, while others describe sudden, intense spasms that radiate toward the abdomen or groin. Tenderness when pressing the side or back is common, and the pain may worsen when bending, twisting, or breathing deeply. If the pain is related to kidney issues, it may come in waves and be severe enough to disrupt daily activity.
Common Causes
- Kidney Stones – Hard mineral deposits causing severe, wave-like pain.
- Kidney Infection (Pyelonephritis) – Inflammation causing pain, fever, and urinary changes.
- Muscle Strain – Overuse or injury affecting side or back muscles.
- Urinary Tract Infection (UTI) – Can cause discomfort if infection spreads upward.
- Shingles – A nerve infection causing burning pain on one side.
Red Flags: When to see a doctor immediately
Seek urgent care if flank pain is severe, sudden, or accompanied by fever, chills, vomiting, blood in urine, inability to urinate, dizziness, or abdominal swelling. These symptoms may indicate infection, kidney obstruction, or other serious conditions requiring immediate evaluation. Pain following trauma to the back or abdomen also warrants prompt assessment.
Home Remedies & Immediate Relief
Resting the affected side, staying hydrated, and using warm compresses may provide mild comfort. For muscular discomfort, gentle stretching may help. Avoiding heavy lifting and maintaining hydration are general supportive measures. These suggestions are not substitutes for medical evaluation when pain is intense or accompanied by warning signs.
This article provides general, educational information and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a licensed healthcare provider for personal medical guidance.
Frequently Asked Questions about Flank Pain
Is flank pain always from the kidneys?
No, muscles, nerves, and other organs can also cause flank pain.
Can dehydration worsen flank pain?
Yes, dehydration increases risk of kidney stones and discomfort.
Is flank pain serious?
It can be — especially when paired with fever, vomiting, or urinary symptoms.
Should flank pain come and go?
Kidney stones often cause wave-like pain that comes and goes.
Can exercise cause flank pain?
Yes, overuse or strain of back and core muscles may trigger it.
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