Good morning. I also have mcas, hereditary alpha tryptasemia syndrome, and small fiber neuropathy. Yes, a large percentage of us masters have small fiber neuropathy as well. I have tried lyrica but my blood sugar raised too much and I am also diabetic. Now trying neurotic slowing. It’s so sedating. My sfn only acts up when I am having a major flare which seems to be every day to a certain extent. My triggers are environmental. Hope this helps.