PLEASE someone tell me what is going on with my body! (NSFW: pics with exposed back)

Honestly, I cannot even begin to guess what is wrong, but I did have a couple of questions if I may. You say that a couple of doctors suspect lupus. Have you shown these doctors your back? In other words, have you seen anyone since your back became so involved? If it were me, I would see a doctor immediately even if it meant going to an ER. That looks painful and may or may not be related to anything else you may have going on. I hope that you are able to get an answer quickly.

No idea, get it checked out.

Update:

Just got back.

-The doctors (all on staff) agreed that the swelling and inflammation on my back was connected to the auto-immune diagnosis (even though we don't know for sure what it is yet). But they have no idea what caused the spine swelling.

-My scapula (shoulderblade) IS funky and swollen and protruding. It's called a "Winged Scapula". Usually caused by injury, but in my case...they don't know. Again, they think it's related to an underlying autoimmune problem.

Gave me pain meds and anti-inflam. The next step will be to contact the new Rheumy. This is a pretty strong symptom of SOMETHING, to say the least.

Now, the bad news.
-The "clicking" in my chest is my heart. I'm 27 years old and in great shape and I have a heart murmur loud enough that people sitting NEXT TO ME can hear. I have never had any issues in the past, and I've had a physical this year.

So, once again, the murmur is also most likely due to some underlying illness that is attacking cartilages/connective tissues. I have to go to a cardiologist and get an echo done to see how bad it is. I won't be surprised if I need the valve replaced.

Glad I went. Even though I still have no answers as to causes, I found out about a potentially dangerous heart problem and got a little more ammunition for my rheumy.