What is fatigue ? It was put on my medical records when i was in hospital, i don't sleep much at night but can sleep easily during the day, i am on alot of medication for Athritis and heart problems, i have tryed sleeping tablets but they don't seem to work, but after i take my morning tablets (for thyrode, heart tablet, muscle relaxants which i take 2 3 times a day ) i can sleep from say 10am til 2pm and that is all the sleep i get, sometimes i do maybe sleep at night at about 6am but wake very easily and don't seem to fall into a deep sleep until the morning. Is this fatique or just a sleeping disorder?