Viral illness → ASCENDING, symmetric weakness or paralysis and loss of DTRs
Little or no sensory involvement
May progress to diaphragm resulting in need for mechanical ventilation (33% of patients)
Autonomic dysfunction occurs in 50% of patients
Progressive weakness of more than one limb
Areflexia
Progression over days to weeks
Recovery beginning 2–4 wk after cessation of progression
Relative symmetry of symptoms
Mild sensory signs and symptoms
CN involvement (Bell's Palsy, dysphagia, dysarthria, ophthalmoplegia)
Autonomic dysfunction
Tachycardia, bradycardia, dysrhythmias, wide variations in BP, postural hypotension
Urinary Retention
Constipation
Facial flushing
Absence of fever at onset
Tachycardia, bradycardia, dysrhythmias, wide variations in BP, postural hypotension
Urinary Retention
Constipation
Facial flushing
Multiple variants
Acute inflammatory demyelinating polyneuropathy
most common type
progressive symmetric muscle weakness
often with decreased deep tendon reflexes due to peripheral nerve involvement
Acute motor axonal neuropathy
often associated with campylobacter infections
only motor involvement
Acute motor and sensory axonal neuropathy
presence both motor and sensory involement
Miller-Fisher Syndrome
Associated with campylobacter infection
More likely to be preceded by diarrhea than viral prodrome
Presence of ophthalmoplegia with ataxia and areflexia
Weakness is less severe but DESCENDING; disease course milder than classic<unk> 
May present similarly to botulism, which is also descending paralysis
most common type
progressive symmetric muscle weakness
often with decreased deep tendon reflexes due to peripheral nerve involvement
often associated with campylobacter infections
only motor involvement
presence both motor and sensory involement
Associated with campylobacter infection
More likely to be preceded by diarrhea than viral prodrome
Presence of ophthalmoplegia with ataxia and areflexia
Weakness is less severe but DESCENDING; disease course milder than classic<unk> 
May present similarly to botulism, which is also descending paralysis
Guillain-Barre syndrome
Neuromuscular weakness
Lambert-Eaton myasthenic syndrome
Upper motor neuron:
Amyotrophic lateral sclerosis
CVA
Polymyositis
Hemorrhagic stroke