I have left sided chest pain plus the area in front of my armpit where my chest goes to my shoulder when my condition gets agitated that area becomes extremely swollen and throbs and shortly after that my entire arm starts to severely hurt and throb ?

Chest,arm symptoms: I recommend a careful examination of your chest wall, left breast and palpation of the left armpit. Causes of throbbing left arm pain include inflammation or growth of lymph nodes in the axilla(armpit), nerve impingement or pressure on blood vessels in the axillary region. Referral to a surgeon and neurologist may be made for further evaluation.