Polio Facts (cont.)

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What are polio symptoms and signs?

Fortunately, the vast majority of patients who are infected with polioviruses showed little or no symptoms and, in fact, don't know that they actually had an infection with polioviruses. Those patients who do show symptoms can be placed in one of two major groups; the first group is non-paralytic polio (minor) and paralytic polio (major).

Non-paralytic polio infections develop flu-like symptoms that consist of fever, sore throat, headache, malaise, and muscle stiffness (neck, back). These symptoms last about 10-20 days and they completely resolve. Although paralytic polio symptoms mimic the non-paralytic polio symptoms for about a week, increasing symptoms of severe muscle aches and spasms, loss of reflexes, and flaccid paralysis (limbs become floppy) begin to develop. In some individuals, the paralysis may occur very quickly (within a few hours after infection occurs). Sometimes the paralysis is only on one side of the body. The musculature involved with breathing may become inhibited or nonfunctional; these patients need assistance with breathing.

Post-polio syndrome describes symptoms that develop in patients about 30 to 40 years after an acute polio illness. The cause is unknown. Post-polio syndrome symptoms include muscle pain, joint pain, and spinal changes such as scoliosis, spondylosis, and/or secondary nerve root and peripheral nerve compression. Slowly progressive muscle weakness (any muscles, including the eye muscles and sometimes termed bulbar polio), generalized fatigue, and cold intolerance may also occur.

Medically Reviewed by a Doctor on 4/4/2014


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