It is also accurate to think of depression as a complex problem that can affect many different aspects of the sufferer's life. It can affect the body , and generate such physical symptoms as insomnia, fatigue, appetite disturbances, diminished sex drive, and anxiety. It can affect the mind , interfering with the ability to think clearly, notice and remember details, and make good decisions. It can affect emotions , causing feelings of sadness, despair, guilt, worthlessness, and apathy. It can affect behavior , leading to alcohol or drug abuse, suicide attempts, and other socially or self-destructive behaviors.
Depression can also present itself as dysthymia, a less intense and more chronic form of depression.
Major depression is far more common than manic-depressive illness, and has a much wider range of contributing factors. People stop trying, they stop caring, they withdraw from life, and of course, this makes them feel even worse. Their lives deteriorate, and it affects others as well. Spouses can feel hurt and alienated, and children may feel guilty, resentful, and as if they are to blame. In turn, family relationships can also exacerbate depressive symptoms.