What kind of condition is depression?

Multiple Factors: I am not completely sure what you mean by your question, but significant episodes of depression are most commonly thought to be caused by a problem in the part of the brain that has to do with emotions. Thus, it is considered to be a biological problem. However, there is no question that circumstances and other environmental situations can have a huge effect on how a person experiences depression.

Medical Condition: While many of us may feel down at times, major depression is a serious medical condition associated with high morbidity and mortality rates. The hallmark symptoms are a depressed mood or loss of interest in previously enjoyable activities for at least two weeks. Other psychological and physiological symptoms must also be present. Fortunately there is effective treatment. See your md for help.