Re: anyone with SCOLIOSIS and a pus/blood filled boil/pimple??!!
It's hard to say. Thinking from afar and what you've stated, I doubt they are related. He sounds like he has those types of cysts that fester, pop, and recur. IF that is what he has, he needs to be seen by a doc. They can often clean them out better and help reduce recurrence, and or some need surgery, and still on some.. the thing keeps erupting.
The rods were put there a long time ago, and it's lower in the back and this "boil" as you call it is up on his upper back. So, that is what gives me the notion these are not related, and "boils" are also not a norm to disc/spine issues on the surface of the skin.
Hope this helps in some way. Good luck.
"believe in the beauty of your dreams"- E. Roosevelt
L5/S1 bulging @ 18, now 46; still there (but no pain)
Fusion at L4/L5 Apr -2006
Solidly Fused Nov-2006
A Success, but still improving!