Many people with lower back, hip, and leg pain as symptoms are often diagnosed with sciatica. A herniated disc in the lower back or conditions like SI joint dysfunction or piriformis syndrome often cause sciatica. People with sciatica often complain about radiating pain, which is why it is possible for other people with similar symptoms to be misdiagnosed with sciatica. Some of the common conditions misdiagnosed as sciatica are hip bursitis, femoral nerve entrapment, and trigger points.