Chronic inflammatory demyelinating polyneuropathy Classic form: symmetric, motor predominant polyneuropathy both proximal and distal weakness Atypical variant asymmetric sensory predominant distal and sensory predominant Proximal polyradiculopathy pure motor Neurofascin Ab mediated: younger, have sensory ataxia Contactin 1 Ab mediated Differentiate from AIDP (Guillain Barre) AIDP: reaches nadir within 3-4...