“…Although the main pathology in CIDP is segmental demyelination, several studies demonstrated coexistence of axonal degeneration following segmental demyelination termed secondary axonal degeneration (Bouchard et al, 1999;Boukhris et al, 2004;Said, 2006;Sghirlanzoni et al, 2000). Differentiating segmental demyelination from secondary axonal degeneration in patients with CIDP is essential as the latter suggests unresponsiveness to medication and unfavorable prognosis (Bouchard et al, 1999;Iijima et al, 2005;Said, 2006;Sghirlanzoni et al, 2000).…”