Different Types of Depression - Characteristics and treatments by Joyce Zborower, M.A. and John F. Walsh, M.S. takes a look at 3 major depressive states as well as 10 lesser depressive states such as Seasonal Affective Disorder (SAD), postpartum, anxiety, chronic, psychotic and other types of depression. We discuss various free online tests that help determine whether their state is really depression or something else along with pharmaceutical as well as natural treatments. There are nine case studies depicting interventions. Jack Walsh, a forty-five year veteran in crisis management gives his best advice for helping someone who is dealing with depression.