disease of the lymph gland in the thoracic cavity, between the lungs
Find a new MD and therapist.
Don't u have insight into ur eating disorder?? OBV ur not over it. Ur still young and have the chance to get over it for good and move on with ur life. Carry on any longer and u might be concerned with ur weight for the rest of your life
Not as far as I am aware. Most STDs affect the genitals.
There are a lot of other things that cause upper back pain, you should see a doctor and get yourself sorted out.
It could be something called a myofascial nodule... When you've hurt your back in the past, was the back pain located in this area and you discovered the nodule at that time? If so, it would be that... It's a small torn/irritated muscle & connective tissue area called "myofascial" nodule... It could also be a sebaceous cyst... Has it ever appeared to be infected and/or drained pus?? Highly unlikely it would be a fatty (benign) tumor in that area...
You need to get to a doctor as soon as possible. There are many possible explanations but all involve proper diagnosis and most can be successfully treated. Things can turn bad if you don't deal with this right away.