insomnia
"I used Rozerem and was very happy. It is strongly thought that nerve endings in the brain have been damaged by a virus or bacteria. I used it on a need to basis.  3 nights in a row, off a week, then 2 nights on and so on.  I used only 8 in a month and did sleep when I used it.  Whether I felt drowsy or got a headache from Rozerem I cannot say as my other diseases give me these symptoms, but I have to say I felt much better. I could not afford Rozerem as my insurance would not cover it. I can now afford and will use 8 -10 a month with Doctor's approval."