Well pulling it and repiercing is probably the most realistic option, however I put up with a bitchy one for 6 years, so I'd first start with changing the jewelry and the soaks and see where that gets you. Glad I could help!

 PTFE is used to make artificial heart valves which are completely implanted inside people.  Not someplace doctors would put a material needing frequent changing.  It is incredibly well known for its biocompatability.  It's actually least likely out of all the body piercing materials to cause irritation.  But let's face it metal looks waaaaay cooler and is the piercees number one choice.  I prefer to combine a metal bead made for externally threaded barbells with PTFE satisfying everyone.  

While I have seen some color change  on a few people It can usually be attributed to normal body residues like sebum and just not cleaning it well.  But that can happen with any kind of body jewelry I've never noticed any kind of iritation or jewelry erosion directly caused by the PTFE itself.  I've had people come back a year later with their same piece of PTFE still in place and never once had a problem.

Now I haven't used TYGON but I have read more than once that that needs frequent changing.  But that can still be every 3 to 12 months.  It can also be sold as the wrong version of TYGON as there are a few that shouldn't go in the body at all.   Are you sure thats not what your thinking of ?  PTFE is def the superior product as far as the plastics go and is def approved for long term use in the body.

If you have any resources for me to check out I'm def into doing my homework.  I just tried to find some my self and couldn't find any cases or even a slight mention.  Please keep me posted  Nothing is ever set in stone as far as body mods are concerned and we're all responsible for educating each other. 

oh its this coming haha, I don't really have any planned. A lot going on right now, so I'm aiming for it to just be a good day at the moment.