<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have some sort of nerve pain in my right arm. It hurts the most when its touched especially when touched softly. I also have lower back pain around the kidney area. Both paincould be described and lightning pain. But, these are not always felt. All my life Ive menstruated every 2 or 3 months. Never on time. I am 20 years old.  <response>: Hi, The location and movement of pain give clues as to what is going on. And sensitivity to touch, lightning-like feeling are indications of a nerve being the cause. This can be from sick nerves or injured nerves and if it is one then it is usually a local injury. The elbow has a prominence that the nerve gets hit between it and most everything else funny bone. There can be arm pain from a problem beginning in the neck. Hope I have answered your query. Let me know if I can assist you further. 