The Post-Polio Syndrome (PPS) refers to a syndrome occurring many years after an episode of acute poliomyelitis. It may be difficult to diagnose, with exclusion of other conditions essential.


Diagnostic Criteria of the Post-Polio Task Force (Mulder et al, 1972):

(1) A prior episode of paralytic poliomyelitis with residual motor neuron loss.

(2) A period of neurologic recovery, followed by an interval of neurologic and functional stability. The interval of stability is usually >= 15 years.

(3) A gradual or abrupt onset of one or more of the following:

(3a) new weakness or abnormal muscle fatigue (decreased endurance)

(3b) muscle atrophy

(3c) generalized fatigue

(4) Exclusion of other conditions that could explain the findings in (3).



• The previous episode of poliomyelitis with residual motor neuron loss may be confirmed by a typical patient history, a neurologic examination, or an electrodiagnostic examination.

• The interval o stability may range from 8 to 71 years.

• Other conditions to exclude include medical, orthopedic and neurologic disorders.


Halstead and Rossi (1987) modified these criteria slightly:

(2) The neurologic recovery involves partial to fairly complete neurologic and functional recovery.

(3) The onset of 2 or more of the following health problems since achieving a period of stability:

(3a) unaccustomed fatigue, muscle and/or joint pain

(3b) new weakness in muscles previously affected and/or unaffected

(3c) functional loss

(3d) cold intolerance

(3e) new atrophy


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