What condition is described as pain affecting the back, hip, and leg due to nerve pressure?

The condition described as pain affecting the back, hip, and leg due to nerve pressure is sciatica. Sciatica specifically refers to the pain that occurs when the sciatic nerve, which runs from the lower back down through the hips and buttocks and along each leg, becomes compressed or irritated. This compression can lead to sharp pain, which is often felt not just in the back, but radiates down the leg, making it a distinct manifestation related to the sciatic nerve pathway.

While a herniated disc can lead to sciatica by causing nerve pressure, not every case of pain related to the back, hip, or leg is classified under herniated disc specifically. Radiculopathy is a broader term that refers to pain that occurs when a nerve is pinched, but sciatica is a specific type of radiculopathy that pertains to the sciatic nerve. Spinal stenosis, on the other hand, involves narrowing of the spinal canal that can lead to nerve compression, but it may not necessarily produce the specific pain pattern associated with sciatica. Therefore, sciatica precisely aligns with the description given in the question.