Myalgic encephalomyelitis/chronic fatigue syndrome

Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a disabling chronic illness. People with ME/CFS experience profound fatigue that does not go away with rest, sleep issues and problems with memory or concentration. Further common symptoms include dizziness, nausea and pain. The hallmark symptom is a worsening of the illness which starts hours to days after minor physical or mental activity. This "crash" can last from hours or days to several months.

The cause of the disease is unknown. ME/CFS often starts after an infection, such as mononucleosis. It can run in families, but no genes that contribute to ME/CFS have been confirmed. ME/CFS is associated with changes in the nervous and immune systems, as well as in energy production. Diagnosis is based on symptoms because no diagnostic test is available.

The illness can improve or worsen over time, but full recovery is uncommon. No therapies or medications are approved to treat the condition, and management is aimed at relieving symptoms. Pacing of activities can help avoid worsening symptoms, and counselling may help in coping with the illness. Before the COVID-19 pandemic, ME/CFS affected 2 to 9 out of every 1000 people, depending on the definition. However, many people, after contracting long COVID, fit ME/CFS diagnostic criteria. ME/CFS occurs more often in women than in men. It most commonly affects adults between ages 40 and 60 but can occur at other ages, including childhood.

ME/CFS has a large social and economic impact, and the disease can be socially isolating. About a quarter of those affected are unable to leave their bed or home. People with ME/CFS often face stigma in healthcare settings, and care is complicated by controversies around the cause and treatments of the illness. Doctors may be unfamiliar with ME/CFS, as it is often not fully covered in medical school. Historically, research funding for ME/CFS has been far below that of diseases with comparable impact. Provided by Wikipedia