>90% of infections are asymptomatic
Minor (abortive)<unk> :
Fever
Diarrhea
Headache
Sore throat
Non-paralytic<unk> :
Fever
Headache
Meningismus
Muscle spasms without paralysis
Paralytic (spinal)<unk>  (~1-2% of<unk>  infections)
Neuro symptoms may manifest after resolution of initial febrile illness
Maximal paralysis at around 5 days, muscle wasting after several weeks, with most patients' paralysis resolving after about 1 year
Flaccid muscle weakness/paralysis
Fasciculations
Absent or decreased reflexes
Autonomic dysfunction (e.g. sweating disturbances, urinary retention, constipation
Neuropathic pain, paresthesias, though usually no sensory deficits on exam
Bulbar dysfunction in about 20% of spinal<unk>  (dysphagia, dysarthria, facial weakness)
Encephalitis: can cause reticular formation disturbances, resulting in dysrhythmias, BP lability, hypoxia, and hypercarbia
Post-polio syndrome
Occurs sometime after complete resolution of initial acute symptoms
Can involve same muscle groups affected during patient's acute illness, as well as those not affected during initial viral infection
Symptoms include muscle weakness, atrophy, fasciculations, fatigue, insomnia, joint pain, bulbar dysfunction, respiratory dysfunction
Fever
Diarrhea
Headache
Sore throat
Fever
Headache
Meningismus
Muscle spasms without paralysis
Neuro symptoms may manifest after resolution of initial febrile illness
Maximal paralysis at around 5 days, muscle wasting after several weeks, with most patients' paralysis resolving after about 1 year
Flaccid muscle weakness/paralysis
Fasciculations
Absent or decreased reflexes
Autonomic dysfunction (e.g. sweating disturbances, urinary retention, constipation
Neuropathic pain, paresthesias, though usually no sensory deficits on exam
Bulbar dysfunction in about 20% of spinal<unk>  (dysphagia, dysarthria, facial weakness)
Encephalitis: can cause reticular formation disturbances, resulting in dysrhythmias, BP lability, hypoxia, and hypercarbia
Occurs sometime after complete resolution of initial acute symptoms
Can involve same muscle groups affected during patient's acute illness, as well as those not affected during initial viral infection
Symptoms include muscle weakness, atrophy, fasciculations, fatigue, insomnia, joint pain, bulbar dysfunction, respiratory dysfunction
Poliomyelitis
Japanese encephalitis
Pertussis
Rabies
Dengue
Viral hemorrhagic fevers
Leptospirosis
CMV neurologic disease