Thank you for sharing your symptoms. Left-sided lower back pain that radiates to the abdomen and sometimes to the testicles can come from several possible causes. Some are minor, but a few require evaluation.
Most common possibilities
1. Ureteric stone (
kidney stone) on the left side
• Pain starting in the back/flank
• Moves to lower abdomen or testicles
• Pain can be intermittent and sharp
• Sometimes nausea or burning urination
→ This is the most likely cause when pain travels toward the testicle.
2. Muscle strain or spinal cause (lumbar strain, disc issue)
• Dull, aching pain
• Increases with movement
• May radiate to groin
• Common if you’ve lifted weight or sat long hours
3. Inguinal issues
• Early hernia
• Groin muscle strain
• Can give pulling pain toward the testicle
4. Epididymal or testicular inflammation (less likely if no swelling)
• Pain usually starts in the scrotum
• May travel upward
• Often associated with swelling or discomfort on touch
5. Colonic or gastrointestinal causes
• Left-sided colitis, constipation, gas build-up
• Pain tends to be crampy and variable
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When pain radiates to the testicles, two causes are top consideration:
✔ Kidney/ureter stone
✔ Lumbar nerve irritation
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What you should monitor
• Burning while urinating
• Blood in urine
• Severe pain waves
• Fever
• Swelling or redness in testicle
• Constipation or bowel changes
Next Steps
To be safe and accurate, you should get the following:
• Ultrasound KUB (to check for stones)
• Urine routine
• Ultrasound scrotum (if testicular discomfort persists)
• Physician/surgeon evaluation
For now, the following can help:
• Hydration
• Avoid heavy lifting
• Warm compress to lower back
• Antispasmodics (if prescribed)
• NSAIDs if you can tolerate them (though in your case, response may be poor)
Health Tips
Urgent medical attention if:
• Pain becomes severe or unbearable
• Vomiting occurs
• Testicle becomes swollen or very tender
• Fever develops