https://www.healthcentral.com/article/having-pain-arm-neck-back-right-shoulder-right-side-head-right-collar-bone-inset
GERD

Why Do I Have pain my arm, neck, back, and Shoulder?

    Answered by Tracy Davenport, Ph.D.
    You should know: The answer above provides general health information that is not intended to replace medical advice or treatment recommendations from a qualified healthcare professional.