What're the symptoms of post-polio syndrome?
Major symptoms include muscle pain, weakness, fatigue and, in some cases, wasting (atrophy) of the muscles that were involved during the polio infection, typically the legs. Additional problems can include intolerance to heat or cold, and difficulty swallowing, breathing or sleeping. The syndrome also can cause abnormal muscle contractions, such as quivering or spasms, in small segments of a muscle. The typical features of post-polio syndrome include unaccustomed weakness, muscle fatigue, central fatigue, pain, breathing problems, swallowing difficulties, sleep disorders, muscle twitching (fasciculations), and gastrointestinal problems. The muscle problems in PPS can occur in previously-affected muscles, or in muscles that were thought not to be affected at the onset of polio. The onset of PPS is usually gradual, but it is sometimes abrupt, with major loss of function suffered over several months or a couple of years. This process often seems to start after a physical or emotional trauma, an illness, or accident. Complications of PPS may include neuropathies, nerve entrapments, arthritis, scoliosis, osteoporosis and, sometimes, post- polio muscular atrophy (PPMA).