insomnia
"I have lived with severe insomnia for 34 years due to a circadian rhythm disorder. When I say that I have tried all sleep medications, you can believe me.  My doctor gave my a voucher for a free trial of Belsomra. I was skeptical, then saw a review someone had written who had a very similar sleep disorder. He said to reach more areas in the brain that control the sleep-awake switches,  to try it with 1 milligram of melatonin,  50 milligrams of diphenhydramine, and a 1/4 milligram of a benzo. I haven't slept like I did last night since I was a child. I gave it  7/10 because I don't know yet if it was a fluke, but I am hopeful that it will continue to work."