Post-exertional malaise (PEM) is a worsening of many ME/CFS symptoms as a result of physical or mental exertion. PEM, sometimes called Post-exertional Neuroimmune Exhaustion (PENE), is often regarded as the main symptom that differentiates Myalgic encephalomyelitis (ME) and chronic fatigue syndrome (CFS) from other fatiguing illnesses. (more...)
post-exertional malaise (PEM) - A notable exacerbation of symptoms brought on by small physical or cognitive exertions. PEM may be referred to as a "crash" or "collapse" and can last for days or weeks. Symptoms can include cognitive impairments, muscle pain, trouble remaining upright (orthostatic intolerance), sleep abnormalities, and gastro-intestinal impairments, and others.
post-exertional malaise (PEM) - A notable exacerbation of symptoms brought on by small physical or cognitive exertions. PEM may be referred to as a "crash" or "collapse" and can last for days or weeks. Symptoms can include cognitive impairments, muscle pain, trouble remaining upright (orthostatic intolerance), sleep abnormalities, and gastro-intestinal impairments, and others.
post-exertional neuroimmune exhaustion (PENE) - An alternative term for post-exertional malaise (PEM), used by people who find that the word 'malaise' fails to capture the serious nature of the condition. Used in the Institute of Medicine (IOM) report.
post-exertional neuroimmune exhaustion (PENE) - An alternative term for post-exertional malaise (PEM), used by people who find that the word 'malaise' fails to capture the serious nature of the condition. Used in the Institute of Medicine (IOM) report.
myalgic encephalomyelitis (M.E.) - A disease often marked by neurological symptoms, but fatigue is sometimes a symptom as well. Some diagnostic criteria distinguish it from chronic fatigue syndrome, while other diagnostic criteria consider it to be a synonym for chronic fatigue syndrome. A defining characteristic of ME is post-exertional malaise (PEM), or post-exertional neuroimmune exhaustion (PENE), which is a notable exacerbation of symptoms brought on by small exertions. PEM can last for days or weeks. Symptoms can include cognitive impairments, muscle pain (myalgia), trouble remaining upright (orthostatic intolerance), sleep abnormalities, and gastro-intestinal impairments, among others. An estimated 25% of those suffering from ME are housebound or bedbound. The World Health Organization (WHO) classifies ME as a neurological disease.
