Low back pain radiating down into the pelvis on one side could be most commonly due to muscle sprain or spasm due to bad posture or lifting unusual weight.
Rarely it could be due to nerve compression.
Take mild anelgesics with Antacid and rest. Hot fomentation will help.
If pain still persists, then consult a Neurospine specialist.
Answered2017-09-13 16:10:10
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