Left L4 Nerve Root Protrusion: Causes, Symptoms & Treatment

A left lateral disk protrusion abutting the exiting L4 nerve root is a medical condition in which the intervertebral disc (a cushion-like structure between the vertebrae) at the L4 level of the spine bulges or protrudes outward, touching or pressing on the L4 nerve root. This can cause pain, numbness, tingling, or weakness in the area served by the L4 nerve root, which includes the lower back, buttocks, and leg. Treatment for this condition may include conservative measures such as pain medication, physical therapy, and lifestyle changes, or surgical intervention in more severe cases.