2. NORD - National Organization for Rare Disorders, Inc.
The following variants of GBS (acute inflammatory neuropathy or acute inflammatory demyelinating polyradiculoneuropathy) are recognized: National Organization for Rare Disorders is dedicated to helping people with rare, orphan diseases.
http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Guillain%20B...

3. All about Guillain-Barr syndrome: GBS sub-families and variants.
(Acute Motor Sensory Axonal Neuropathy) A serious axonal form of GBS that attacks motor and sensory nerves. (Acute Motor Axonal Neuropathy) A particularly severe form, attacks the motor nerves primarily, causing rapid progressive weakness often...
http://www.jsmarcussen.com/gbs/uk/overview.htm

4.  Autoimmune diseases and Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) support group
(Multifocal Motor Neuropathy) also looks like ALS has no sensory involvement. (It is a common cause of treatable neuropathy or Polyneuropathy. CIDP or chronic inflammatory demyelinating polyradiculo neuropathy is an immune-mediated Polyneuropathy...
http://www.cidpusa.org/