depression
"I was given this drug as a prescription for sleep issues that I was having.  At the time I had no known indications of depression or anxiety. It was simply to help with my sleep patterns since I travelled extensively.  After taking the drug for a few months I simply stopped because I was on a more regular sleep cycle.  Within a week, I was completely incapacidated, diagnosed with severe depression, anxiety and exhaustion.  I also became terrified of daily activities and was incapable of even showering myself.  I have never experienced such a dark space in my life.  It wasn't until later that my symptoms were tied to this medicine withdrawal.  I am furious about that and now taking another med to recover from this one, and then weened off."