1) What is the difference between back pain and back pain with leg pain?

Back pain on its own most likely due to problems in the spine. Back pain with leg pain might be due to nerve compression from spinal cord due to various reasons such as disc prolapse etc.

2) Why is water essential to prevent back pain?

Drinking water is essential to prevent dehydration. A dehydrated disc is more prone to injury.

3) Why taking rest between work is essential to prevent back pain?

Rest is essential to get more hydration for the disc. If disc height decreases due to dehydration then it can cause more strain to other structures in the back such as facet joints, ligaments, etc.

4) What are the other things to prevent back pain/ injury?

Bend your hips and knees rather than with spine. When lifting weight does it with close to the body. Use back support and use correct chairs.

5) When is MRI essential?

Back pain with leg pain – it is better to get MRI scan to see any disc prolapse. Back pain in elderly, children, back pain with fever, back pain with loss of weight and loss of appetite, back pain with and history of cancer need to get MRI to confirm there is no other pathology.

6) What is the treatment for back pain?

The main treatment is physiotherapy. Painkillers and muscle relaxants are helpful in the acute phase. Once pain is controlled better to get back muscle strengthening exercises.

7) What are back muscle exercises?

8) What do I need to do when I got back pain with leg pain? 

An orthopaedic doctor will assess you and probably get MRI scan done. Depends on the findings treatment options includes traction with physio, painkillers. He may suggest nerve root block (which is injection around nerve root with steroid under X-ray control). Surgery may be avoided if nerve root block works. 

Summary:  Back pain on its own can be controlled with physio and exercises. Drink plenty of water.

You need to see an orthopaedic doctor. He will assess you and probably get MRI scan done. Depends on the findings treatment options includes traction with physio, painkillers. He may suggest nerve root block (which is injection around nerve root with steroid under X-ray control). Surgery may be avoided if nerve root block works.

Summary: Back pain on its own can be controlled with physio and exercises.