insomnia
"Ten years ago I developed terrible insomnia.  I am a lawyer, and getting 2-3 hours of restless sleep a night nearly ruined me.  I was first on Ambien, which never gave me real rest. Eight years late, I am still taking 3 mg of Lunesta every night.  I sleep 7-8 hours every night.  I have never developed a tolerance to it, never had sleepwalking or other issues.  In fact, on Lunesta, I dream!  My sleep cycle is pretty much normal. This has given me ten years of steady sleep, with no real side-effects.  When I go off it for a night or two, I have no major rebound issues. Lunesta has literally given me my life back, and the confidence I will sleep every night."