Abstract
Of the lower motor neuron diseases, poliomyelitis and Guillain-Barre syndrome are the most likely to be confused with one another. Yet the two diseases differ. The Guillain-Barre syndrome has a slower onset, often follows a nonspecific illness, more commonly causes symmetrical paralysis, usually elevates the spinal fluid protein, may lead to sensory loss, tends to recur, and rarely results in permanent paralysis.