I have Lupus, I have mouth sores that are painful. I was told that mouth sores due to lupus are not painful?? Also I have burning of my tongue when eating, not all the time but off and on. I question about knots all over me with several being painful. My skin cancer doctor, primary doctor since me to a surgeon for removal of one on my back. The surgeon said unless I just wanted to be cut on he would removed it. What do you think about this.