Hello, For many years I had a small lump on my back ... on the inside not the outside. I could move it around with my fingers as if it was an oblong ball. Recently, I noticed some liquid and I felt for the lump but it s no longer there. There is a small hole on my back now and a dark mark where the lump used to live (on my actual skin). Then a few days later, I started getting a rash or it may be ezcema on my back (spine) and on my chest the opposite side of where the lump was. What could this be??