The National Organization for Rare Disorders identifies CIDP (short for "chronic inflammatory demyelinating polyneuropathy") as a rare disease that affects the body's nervous system, with symptoms such as impaired motor skills and even paralysis. In this episode, Medical Stories focuses on two individuals with CIDP. In Chapel Hill, North Carolina, 63-year-old Corbin relates how the illness slowly took away his body control and his independence, even testing his faith as a religious man.