Hi, I would just like to know what causes constant tiredness. I sleep well but I really struggle to wake up, get out of bed and I m tired all day until bedtime again. I had a brain op just over a year ago - a section was removed for epilepsy. I m still on Epitec 200mg once a day (morning) and anti-depressant Cylift 50mg once a day (morning). I m not sure if this is the cause or the constant depression I feel when I m only around my husband (it s been that way since the op as well). I ll be thankful for any advice.