Sciatica, herniated disc, and Lumbar Radiculopathy

Sciatica: Sciatica refers to a condition characterized by pain that radiates along the sciatic nerve, which is the longest nerve in the body. The sciatic nerve originates from the lower back and extends down the back of each leg. The most common cause of sciatica is a herniated disc (discussed next), although other factors such as spinal stenosis, spondylolisthesis, or piriformis syndrome can also lead to sciatic nerve compression. Symptoms of sciatica include lower back pain, buttock pain, and pain, numbness, or tingling that radiates down the leg.

Herniated disc: The spinal column is made up of individual bones called vertebrae, and between each pair of vertebrae is a cushion-like structure called an intervertebral disc. A herniated disc occurs when the soft inner portion of the disc (nucleus pulposus) bulges or ruptures through the tough outer layer (annulus fibrosus). When a herniated disc occurs in the lower back (lumbar spine), it can compress nearby spinal nerves, including the sciatic nerve, leading to symptoms such as lower back pain, leg pain, and muscle weakness. Herniated discs can be caused by age-related degeneration, injury, or excessive strain on the back.

Lumbar radiculopathy: Lumbar radiculopathy, also known as a pinched nerve, refers to the compression or irritation of one or more spinal nerves in the lumbar region. This can be caused by various conditions, including herniated discs, spinal stenosis, bone spurs, or disc degeneration. The compression or irritation of the nerve can lead to pain, numbness, tingling, or weakness that radiates along the path of the affected nerve. The specific symptoms experienced depend on the location and severity of the nerve compression.