Do you think that the steroids had any role in you developing mast cell activation? I expect to be receiving IV steroids for my increased parasthesias and burning in the next couple weeks. I had SFN before COVID, but vaccination has ruined my life unfortunately.

Also, I am awaiting results from University of Washington for the same test as well as FGFR3. Your reading in only mildly elevated, but you might discuss with your neurologist whether that merits you trying IVIG. The HDS test is for dysautoimmunity, so an elevated result would indicate an autoimmune reaction or condition.