http://neuromuscular.wustl.edu/antibody/gbs.htm

There are differing presentations of Guillain Barre syndrome, and a number can start out with sensory symptoms and then progress to motor ones. There are also vary degrees of severity in a Guillain Barre "attack"--some do not progress to paralysis.

Moreover, as Chronic Inflammatory Demyelinating Polyenuropathy (CIDP) is often considered the slower onset version of Guillain Barre, sometimes with a more subacute onset the two may be hard to distinguish:

http://neuromuscular.wustl.edu/antib...html#cidpacute

There is also a variation: "acute small fiber neuropathy" that confines itself to sensory symptoms--even rarer than "classic" Guillain Barre" (it has been speculated this is what I may have experienced:

http://neuromuscular.wustl.edu/senso...html#sfpnacute