Dear sir
how long you are suffering from extreme back pain?
Any history of injury or history of lifting heavy weights
Most commonly the sudden extreme back pain is secondary to muscle strain, which will get better by medicines and bedrest
If there is a history of injury, then better to get x ray
If there is associated fever, that also needs evaluation
If no injury and no fever and short duration pain will get better with medicines and bed rest
If pain is persistent then better to consult a spine surgeon
Next Steps
if pain is persistent, and severe association with fever needs spine surgeon consultation
Health Tips
bed rest for 2 days
avoid bending forward
avoid sitting on ground