If a person went to his primary care physician and complained of symptoms of fatigue, guilt, worthlessness, irritability, insomnia, decreased appetite, loss of interest in regular activities, persistent sadness, anxiety, and thoughts of suicide, I am pretty sure he would leave that office with a diagnosis of Major Depression Disorder (MDD) and a prescription for Zoloft, Prozac, or another popular Selective Serotonin Reuptake Inhibitor (SSRI). After all, the guy has just cataloged the classic symptoms of clinical depression. However, those same symptoms belong to a variety of other conditions, as well, that require treatments other than antidepressants and psychotherapy, the two pillars of conventional psychiatric recovery today. They may certainly look and feel like clinical depression to the outsider, but they may require just a small tweak in diet or hormones. Here are six conditions that fall under that category.