<unk>  <unk> ,<unk> myelitis sequelae) is a group of latent symptoms of<unk> myelitis<unk> , occurring at about a 25–40% rate (latest data greater than 80%). These symptoms are caused by the damaging effects of the viral infection on the nervous system. Symptoms typically occur 15 to 30 years after an initial acute paralytic attack. Symptoms include decreasing muscular function or acute weakness with pain and fatigue. The same symptoms may also occur years after a nonparalytic<unk>  (NPP) infection. The precise mechanism that causes<unk>  is unknown. It shares many features with chronic fatigue syndrome, but unlike that disorder it tends to be progressive and can cause loss of muscle strength. Treatment is primarily limited to adequate rest, conservation of available energy, and supportive measures, such as leg braces and energy-saving devices such as powered wheelchairs, analgesia (pain relief), and sleep aids.
Post-polio syndrome
Leukomyelitis
Guillain–Barré syndrome
FACES syndrome
Acute disseminated encephalomyelitis
Eastern equine encephalitis
Tension myositis syndrome
Postvaccinal encephalitis