In our everyday life we sometimes come across the term depression. It is a term which is used by many people to show that they are upset for something. Depression is not the state where a person�s mood is off or when the person is not in good or normal mood. It is actually a different thing.

Depression is a critical state of physical and psychological state of human. Depression refers to the state of melancholia, unhappiness or sadness, or to a comparatively minor slump in mood which may last only a few hours or days. Depression may be a mild disease actually a disorder, but that can be cause of annoyance in our day to day life, when it goes very serious, it can make a human completely unable to work and participate in our social life.

It is an illness which includes feelings of sadness lasting for two weeks or longer, often accompanied by a loss of interest in life, hopelessness, and decreased energy. Such upsetting feelings can affect one's capability to carry out the usual tasks and activities of daily living.

Causes of depression:

At the primary stage nobody really knows what causes depression. To say in medical term it is a result of low levels of particular neurotransmitters (the chemicals that carry signals from one nerve cell to the next) in the brain. People with depression are known to have lower brain levels of these chemicals and drugs that elevate them can help lift mood. Some types of depression do seem to run in families, suggesting a biological vulnerability. Other factors which cause depression are:

• Emotional stress
• Mental tension
• Psychological disorder
• Low self-esteem or anxiety etc.

The causes of depression as stated above are the common causes. Depression is also caused by various other factors which are uncertain at the beginning. But after proper diagnosis of the symptoms it is easier to know the causes of depression. You probably would like to know about the symptoms of depression. Our next section deals with the symptoms of depression. You can find everything related to depression in there.

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