It's not your fault, because NCBI does this too and the media loves it, but slapping "neuro" onto the beginning of a discipline doesn't transform it into a cooler version of something. Epigenomics is a discipline. Neuroepigenomics is just using epigenomics in the field of neuroscience. I am a complex disease geneticist who happens to study neurologic diseases, but I think "neuro" terminology is pretty lame. You don't see people doing research in gastroepigenomics or ophthoepigenomics or dermatoepigenomics. If you do epigenomic research on neurological disorders of unclear etiology are you suddenly a cryptoneuroepigenomicist? If you do research on the epigenomic impact of low income environments in neurologic disease, are you a socioeconomiconeuroepigenomicist?
"Oh, you did your PhD in epigenomic mechanisms in inflammatory bowel disease? That's cute. I did mine on histone acetylation in PARKINSON'S! Whole different ballgame, punk! Oh, what these eyes have seen!" Neurokinetic mic drop!
Again, not directed at you, not your fault. It's kinda like the astro prefix. Physicist = boring nerd math. But astrophysicist = Star-Lord!