It is believed to be an autoimmune disease -- one in which the immune system mistakenly attacks healthy tissue. It occurs after a mild infection, surgery or, rarely, after an immunization.
Keeping this in view, what is the life expectancy of someone with polio?
Between 5 and 10% of people who develop paralytic polio will die. Physical symptoms may return 15 years or more after the first polio infection.
Also, is polio a neurological disorder?
Polio, or poliomyelitis, is an infectious viral disease that can strike at any age and affects a person's nervous system. Post-polio syndrome (PPS) is a condition that affects polio survivors years after recovery from an initial acute attack of the poliomyelitis virus.
What causes post polio syndrome?
What causes post-polio syndrome? The cause is unknown. However, the new weakness of post-polio syndrome appears to be related to the degeneration of individual nerve terminals in the motor units that remain after the initial illness. A motor unit is a nerve cell (or neuron) and the muscle fibers it activates.
What does Polio do to muscles?
When it multiplies in the nervous system, the virus can destroy nerve cells (motor neurons) which activate skeletal muscles. These nerve cells cannot regenerate, and the affected muscles lose their function due to a lack of nervous enervation - a condition known as acute flaccid paralysis (AFP).