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Chest Shoulder Upper Back Muscles

Subclavius Muscle: Collarbone, Arm, Hand, Finger Pain

    The subclavius muscle is found just under the collarbone. It contributes to pain in the area around the clavicle (collarbone), shoulder, upper arm, forearm, thumb and fingers. It can also contribute to tingling and numbness in the arm and hand.

    Deltoid Muscle: Shoulder Pain and Weakness

      The deltoid is the muscle that covers the tip of the shoulder. It contributes to pain in the shoulder and upper arm. One indication of problems with the deltoid muscle is pain is most intense during activity and subsides when resting the shoulder and arm.

      Subscapularis Muscle: Frozen Shoulder Pain, Rotator Cuff

        The subscapularis muscle is found on the inside of the shoulder blade. It can cause severe pain in the shoulder blade area that can also run down the back of the arm. Pain is also often felt in the wrist, but not the forearm.

        Rhomboids Muscle Pain

          The rhomboids consist of two muscles, the rhomboid major and the rhomboid minor. They are located in the upper back and contribute to pain around the inner edge of the shoulder blade.

          Intercostal Muscles: Rib Pain, Breathing Difficulty

            The intercostal muscles are found between the ribs. The muscles can contribute to pain in and around the rib cage. They are also a major contributor to pain in the sides and in between the ribs known as a side stitch.