So a quick back ground. I am a 28 year old male, in general good health, and doesnt get sick easy. I have gone to the dermatologist about this and he has taken pictures, done a biopsy(actually 2, for a second sample), and even had me come to a monthly meeting that he and fellow local dermatologists have(so that they could look at it and give their opinion as well). So far none have any idea what it could be. On my chest, I have light redness with bumps, that has spread across my chest from the left to the right slowly over time. It does not itch, and it does not flake or peel. Also, I have had this since high school.
I have some pics I'll attach, so everyone can kind of see what it looks like. Hopefully I can find some answer of what it is online, or atleast something that'll help figure out what it may be!
Thank you for any help everyone, I appreciate it!