Multiple sclerosis(MS) is a chronic inflammatory disease of the central nervous system that involves demyelination and axonal degeneration. Usually. MS begins with a relapsing-remitting MS (RRMS) course. and approxi mately will develop into secondary progressive multiple sclerosis (SPMS). https://www.roneverhart.com/Christmas-Ornament-Ice-Ball-Molds-Design-Set-Options/