This case report describes the treatment of a patient with an acute disc herniation at L3/L4 resulting in radiculopathy and foot drop using high power laser therapy. The patient had failed to improve with epidural steroid injections. After 10 treatment sessions over several weeks applying high power laser therapy to the affected areas, the patient's pain and neurological symptoms fully resolved and improvements were still seen over 18 months later without recurrence. High power laser therapy was able to penetrate deeply and stimulate tissue healing, reducing inflammation and promoting nerve regeneration to resolve this patient's disc herniation and associated symptoms.