Depression : Depression is a state of low mood and aversion to activity that can affect a person's thoughts, behavior, feelings and sense of well-being
In general the type of treatment includepsychotherapy and/or antidepressants, alternative therapies, or active intervention. The most important classes of antidepressants are the selective serotonin reuptake inhibitors (SSRIs), serotonin–norepinephrine reuptake inhibitors (SNRIs), tricyclic antidepressants (TCAs) and monoamine oxidase inhibitors (MAOIs). Other drugs used or proposed for the treatment of depression include buprenorphine,tryptophan,low-dose antipsychotics,and St John's wort.