narcolepsy
"Took methylphenidate SR (Ritalin sustained release) 100 mgs a day for years for major depression, was still tired, could still sleep at anytime, but not too bad. Dr retired, new Doc doesn't want to prescribe that he switched script to Adderall 90 mgs  a day. Worked at first but not well, now it is worthless. I can hardly get out of bed and it is almost impossible to stay awake all day. Did the Sleep Study a few weeks ago and Dx with Narcolepsy w/o cataplexy, prescribed Modafinil to take with the Adderall, a little better. In my case the Adderall must go. Very good that it works for others, as no one wants to feel like they are sleeping their life away."