Hi, from the information provided in question it is clear that your boyfriend s symptoms are most likely due to his disc problem. Herniated disc causes compression of spinal chord depending upon fibers involved there is various presentation. 1) Postero-lateral part of spinal cord contains fibers called as dorsal column which are responsible for sense of position and balance, vibration sense. 2) Antero-lateral part of spinal cord contains fibers called as anterior and lateral spinothalamic tract which are responsible for sense of touch, pain and temperature. I want to know more about your boyfriend- 1) His age. 2) What is his kidney problem. 3) Investigations done in relation to his disc and kidney problems like MRI of spine, kidney function tests, urine examination, ultrasound of kidneys. I will advise to consult spine surgeon, he may requires surgical correction of spine depending upon his clinical examination and MRI findings. If there is impaired blood supply to brain there might be similar presentation but in this case it is less likely because of significant history of disc herniation.