Hello, Your father is advised to get connected to a Physical therapist. Long term use of cortisone injections can cause complications. Physiotherapy is very helpful to treat the pinched nerve, it relieves pain, and tension in the nerve. He can take NSAIDS, one stat after food if required. He my not take it if he is comfortable. Physiotherapy gives more strength to the nerves and the muscles which are affected. Exercises under observation of the physical therapist effectively reduce discomfort. Nerve-related pain can also be reduced by drugs like gabapentin or Amitriptyline. Ideally the symptoms get controlled and the patient feels better. But in case the symptoms persist then you should report to a Neurologist, get your father examined and evaluated. He may have to get a few more blood tests and imaging tests done before treatment is started. If the symptoms persist despite taking medication, you might require surgery. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician