Hi Mr Singh, Welcome to HCM, I have read your query, sciatica is pain in the lower extremity resulting from irritation of the sciatic nerve. The pain of sciatica is typically felt from the low back (lumbar area) to behind the thigh and radiating down below the knee. The sciatic nerve is the largest nerve in the body and begins from nerve roots in the lumbar spinal cord in the low back and extends through the buttock area to send nerve endings down the lower limb. The pain of sciatica is sometimes referred to as sciatic nerve pain. The pain or numbness may also be felt on the back of the calf or on the sole of the foot. The affected leg may feel weak. The pain often starts slowly. Sciatica pain may get worse after standing or sitting, at night, when sneezing, coughing, when bending backwards or walking more than a few yards, especially if caused by spinal stenosis. Because sciatica is a symptom of another medical condition, the underlying cause should be identified and treated. While sciatica is most commonly a result of a lumbar disc herniation directly pressing on the nerve, any cause of irritation or inflammation of the sciatic nerve can reproduce the symptoms of sciatica. This irritation of nerves as a result of an abnormal intervertebral disc is referred to as radiculopathy. Aside from a pinched nerve from a disc, other causes of sciatica include irritation of the nerve from adjacent bone, tumors, muscle, internal bleeding, infections, injury, and other causes. In some cases, no treatment is required and recovery occurs on its own. Conservative treatment is best in many cases. Your doctor may recommend the following steps to calm your symptoms and reduce inflammation like apply heat or ice to the painful area. Take over-the-counter pain relievers such as ibuprofen or acetaminophen. Avoid heavy lifting or twisting of your back for the first 6 weeks after the pain begins. This should include exercises to strengthen your abdomen and improve flexibility of your spine. Nerve pain is very difficult to treat. If you have ongoing problems with pain, you may want to see a neurologist or a pain specialist to confirm your diagnosis and surgical option and ensure that you have range of treatment options. Thanks