insomnia is a condition where an individual does not feel tired and cannot fall asleep. everyone has bouts of insomnia where they're too excited to sleep, but insomnia is when an individual consistently cannot fall asleep for even several days at a time. insomnia with comorbid chronic fatigue syndrome looks like- i am tired always, but not tired enough to fall asleep. i am too awake to fall asleep unless i take my sleeping meds, but when i do finally fall asleep, i sleep for 12-17 hours and wake up still tired.