Information in simple English

What is chronic fatigue syndrome?

Chronic fatigue syndrome (CFS), also known as myalgic encephalomyelitis (ME) and ME/CFS, is a long-term medical condition characterized by a wide range of symptoms.



  • worsening of symptoms with movement
  • long-term fatigue
  • sleep that isn't invigorating
  • memory, focus, and concentration difficulties
  • dizziness that deteriorates with moving from laying or sitting to standing


  • viral infections
  • immune system problems. 
  • hormonal imbalances
  • physical or emotional trauma.