causes of depressionWhat are the causes and symptoms of depression?

I don't have thoughts of suicide but I, and those around me, have noticed a change in my behavior. Lately I have been feeling nau搜刮引擎劣化us, tired, agitated, and I have also been very reclusive and sad. I've had a lot of trouble getting up in the mornings, which is very odd for me. Also, I've haven't been able to concentrate very well. None of these things are common with me so I was wondering what it was. I heard that some of these things are symptoms of depression. I also wanted to know what causes depression. Any and all suggestions and or comments are greatly appreciated. Thank you.
Symptoms of Major Depression

Sleep disturbance (insomnia), sleeping too much
Crying
“Empty” feeling
Loss of interest in uscauses of depressionually enjoyable activities
Difficulty in thinking clearly
Feelings of guilt or worthlessness
Loss of concentration
Lowered self-esteem
Not as talkative as usual
Excessive fatigue
Prolonged sadness
Loss of appetite
Socially withdrawn
Persistent permission
Significant weight loss
Irritability
Persistent thoughts of death of suicide
Attempted suicide

I wish I could help but I'm feeling depressed these days. I saw your post and I have almost every symptom listed in the best answer. I feel like I can't do anything right. I feel like my life is going nowhere. I feel like I just want to close myself up in my room and never come out.

Psychiatrist andcauses of depression psychologist has defined depression to affect the whole body, the nervous system, moods, thoughts, how you feel about yourself and others, the quality and quantity of sleep. Depression can last from a few days to years depending on the level of depression. According to an article, there are many types of depression, with variations in the number of symptoms, their severity, and persistence. Some of the symptoms include fatigue, changes in appetite, backaches, headaches, quickness to anger, loss of interest in hobbies, insomnia, or excessive sleeping, worthlessness, and inadequacy. Some people try to sleep off depression while others just sit around hoping something will happen.