WHICH IS BETTER, FEELING LIKE A DOOFUS FOR THINKING IT WAS YOUR HEART, or KEEPING QUIET AND DYING FROM A HEART ATTACK???
Since we now know it's not your heart, I suspect it is your scalene muscles; they are the muscles found on the side of your neck. The ANTERIOR and MIDDLE SCALENES attach to your first rib. If the scalenes are tight, they will pull up the first rib. The problem is, your brachial plexus
(group of nerves that go from your neck down to your arm and hand) runs over that rib. So if the rib is lifted upwards, it can irritate those nerves and that can cause arm/hand pain
. The scalene muscles themselves can REFER pain down the arm, chest and back (between the shoulder blade and spine on the same side).
Press along the side of your neck on the same side as your arm pain
. Keep pressing and maintaining the pressure as you go along the side of your neck, down towards your collar bone. CAN YOU RE-CREATE the same arm and chest pain? If so, there is your answer.