###Human: I have pain in the chest and arm though all the reports are normal. Why? ###Assistant: Hello. From what you have mentioned, most likely you have musculoskeletal pain. Which may be due to trauma or strenuous exercise. Please provide me with a chest X-ray in order to exclude other serious diseases. Musculoskeletal pain is characterised with pain with inspiration plus tenderness when pressing. My advice is to use Voltaren gel thrice per day for three weeks. Deep heat thrice per day for three weeks.