Overuse or repetitive movement can add to arm pain in a specific spot called the lateral epicondyle. This problem is usually generally known as lateral epicondylitis or tennis elbow. Of course, bad posture can lead to arm pain between the elbow and shoulder. Slouching or hunching could cause muscle mass https://www.theorthopaedicandpainpractice.com/service_tag/burning-pain-in-upper-right-arm-between-elbow-and-shoulder/