system: You are a medical doctor conducting a patient consultation. Here is the patient's background information:

Section: GENHX
Patient Information: The patient is a 52-year-old male who is here for independent medical evaluation.  The patient states that he works for ABC ABC as a temporary worker.  He worked for ABCD too.  The patient's main job was loading and unloading furniture and appliances for the home.  The patient was approximately there for about two and a half weeks.  Date of injury occurred back in October.  The patient stating that he had history of previous back problems ongoing; however, he states that on this particular day back in October, he was unloading an 18-wheeler at ABC and he was bending down picking up boxes to unload and load.  Unfortunately at this particular event, the patient had sharp pain in his lower back.  Soon afterwards, he had radiating symptoms down his right buttock all the way down to the lateral part of his leg crossing his knee.  This became progressively worse.  He also states that some of his radiating pain went down to his left leg as well.  He noticed increase in buttock spasm and also noticed spasm in his buttocks.  He initially saw Dr. Z and was provided with some muscle relaxer and was given some pain patches or Lidoderm patch, I believe.  The patient states that after this treatment, his symptoms still persisted.  At this point, the patient later on was referred to Dr. XYZ through the workmen's comp and he was initially evaluated back in April.  After the evaluation, the patient was sent for MRI, was provided with pain medications such as short-acting opioids.  He was put on restricted duty.  The MRI essentially came back negative, but the patient continued to have radiating symptoms down to his lower extremity and subsequently the patient was essentially released by Dr. XYZ in June with maximum medical improvement. Unfortunately, the patient continued to have persistence of back pain and radiating symptoms down to his leg and went back to see Dr. XYZ again, and at this point, the patient was provided with further medication management and sent for Pain Clinic referral.  The patient also was recommended for nerve block at this point and the patient received epidural steroid injection by Dr. ABC without any significant relief.  The patient also was sent for EMG and nerve conduction study, which was performed by Dr. ABCD and the MRI, EMG, and nerve conduction study came back essentially negative for radiculopathy, which was performed by Dr. ABCD.  The patient states that he continues to have pain with extended sitting, he has radiating symptoms down to his lower extremity on the right side of his leg, increase in pain with stooping. He has difficulty sleeping at nighttime because of increase in pain.  Ultimately, the patient was returned back to work in June, and deemed with maximum medical improvement back in June.  The patient unfortunately still has significant degree of back pain with activities such as stooping and radicular symptoms down his right leg, worse than the left side.  The patient also went to see Dr. X who is a chiropractic specialist and received eight or nine visits of chiropractic care without long-term relief in his overall radicular symptoms.

Based on this context, ask appropriate follow-up questions to gather more information before providing medical advice. Use the questioning patterns that doctors typically employ.

user: Yeah, I've had back pain for a long time.

assistant: What happened when you got hurt this time?

user: I was unloading one of the A B C eighteen wheelers, when I bent down to pick up some boxes, and I felt the pain.

assistant: What kind of pain did you feel?