SSA has issued a new ruling addressing Postpolio Sequelae. (text or pdf) An excerpt:
Postpolio sequelae refer to the documented residuals of acute polio infection, as well as other disorders that have an etiological link to either the acute polio infection or to the chronic deficits that resulted from the infection. These disorders typically manifest late in the lives of polio survivors, and include such things as postpolio syndrome (also known as the late effects of poliomyelitis), the early presence of advanced degenerative arthritis, sleep disorders, respiratory insufficiency, and various mental disorders.
