For a while now, I've had the worst fatigue I've ever had. I spend most of the day in bed. A couple days ago, I slept almost 20 hours straight. I don't have any other symptoms. Obviously, I should ask a doctor but I'm wondering if anyone has ever experienced anything similar. It's not usually sleepiness, just exhaustion, an exhaustion that usually physically hurts. Ritalin, caffeine, vitamins, minerals, amino acids, food, water, and other things have made little to no difference.