Small squishy, pea sized bump on left side above shoulder near neck trunk, teeth pain on same side, minor difficulty swallowing on that side sometimes, neck stiffness, minor shoulder pain, neck discomfort, does not obstruct sleeping, or eating ?

Lymph Node: Possibly a lymph node, enlarged from a draining abscess. Tooth pain indicates need to see a dentist immediately. If this is a draining abscess and it flares up you could be in a serious medical emergency which could include throat closure and toxins traveling into your chest. Do not dismiss the symptoms your body is giving you.

Teeth pain: May indicate oral infection, abscessed tooth/teeth and/or gum/bone disease. As a result you may have involvement of one or more of your lymph nodes. Start with a thorough examination by your General Dentist and go from there.