- The medical literature estimate of the prevalence of chronic post-stroke pain ranges from 32-42% at four to six months and 11-21% at twelve to sixteen months after a stroke. Shoulder pain alone has been found to affect up to 72% of post-stroke survivors. If one were to include other causes of post-stroke pain, this number could be significantly higher. It is usually accompanied by decreased temperature sensation, may be deep or superficial, and can be severe. Allodynia (painful response to a normally innocuous stimulus) and hyperalgesia (increased response to a painful stimulus) are often present. Mechanical shoulder pain is another common post-stroke pain syndrome, though it is unrelate