A patient with a polio-like syndrome can develop late sequalae similar to those seen with polio.

Features of the post-polio-like syndrome:

(1) history of s polio-like syndrome due to a virus (enterovirus, Coxsackie, etc)

(2) no evidence of infection with poliovirus

(3) neurological and functional disability

(4) exclusion of other explanations


Clinical features:

(1) muscle weakness

(2) abnormal muscle fatigability

(3) segmental muscle atrophy


Nerve conduction studies may show:

(1) reduction in compound muscle action potential amplitudes

(2) normal sensory nerve action potential amplitudes

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