Table 1.

Typical chronic inflammatory demyelinating polyneuropathy and atypical variants

Variant	Symptoms	Signs
Typical CIDP
CIDP	Proximal and distal weakness and numbness	Absent or ↓ DTR in all limbs
Atypical CIDP
Distal CIDP or DADS	Predominantly distal, sensory more than motor, may have ataxia	DTR may be normal or ↓ in proximal areas
Multifocal CIDP or Lewis-Sumner syndrome or MADSAM	Asymmetric motor and sensory	DTR may be normal in unaffected limb
Motor CIDP	Proximal and distal, symmetric, motor	DTR generally ↓
Sensory CIDP	Proximal and distal, symmetric, sensory, may have ataxia	Absent or ↓ DTR in all limbs

CIDP Chronic inflammatory demyelinating polyneuropathy, DADS distal acquired demyelinating symmetric (neuropathy), DTR deep tendon reflex, MADSAM multifocal acquired demyelinating sensory and motor (neuropathy), ↓ decreased