Mrs. D... wow. You always add such interesting info. I find what you said particularly interesting because the onset of my neuropathy started soon after I had parvo virus b19... a virus that replicates and can harbor in the BONE MARROW and blood. Two and a half years later, I still have parvo virus DNA in my blood and a high IgG antibody titer. I've consulted doctor after doctor as this has affected me systemically and in more ways than "just" the neuropathy, and there isn't a lot of understanding as to how very difficult this virus can be on an adult. In children, it's called Fifths Disease and is a mild flu-like virus. I haven't been able to pin down a decisive opinion as to whether the DNA represents "dead" viral particles or an active, persistent infection. In any event, there isn't any treatment protocol, so I think I'm stuck. Anti-virals don't work. I tried two rounds of IVIG and they didn't help. I'm left to wonder if it just wasn't a sufficient amount, but getting insurance approval for further treatment is out of the question. I have levido reticularis with a skin biopsy indicating a mild but chronic inflammatory infiltrate and a moderately elevated sed rate. ANAs all normal... so far. They did a cryoglobulemia and IgG, IgM and IgA immune function blood test, and that was normal too, and maybe that's what you were referring to regarding the thickening of blood. Oh, I just so wish the doctors could help figure this out. Thank you for your efforts to help and educate!