LDH-related sciatica symptom severity measurement (EFO_0007941) is quantification of the severity of sciatica symptoms in patients with lumbar disc herniation. In the case of persistent progressive severe sciatica symptoms, patients may require surgical intervention via microdiscectomy, a minimally invasive spinal surgery for removal of herniated lumbar disc tissue. Also known as: lumbar disc herniation-related sciatica symptom severity measurement.