In most cases where type 1's develop the disease and are not born with it
I'm Type 1 as well. Although we weren't "born with it", we were most certainly born with the genetic marker that made us susceptible to it (I'm sure you know this).
I had this odd skin reaction that was like just random inflammation
Maybe that odd skin reaction is what triggered the auto-immune response that attacked your islet cells? I know correlation-and-causation and all of that, but it makes you wonder about a lot of things that you could catch that would trigger that response (the Coxsackie virus has been implicated, but is somewhat inconclusive).
Just remember, we're only 10 years away from cure, and have been for over 30 years now