What are the causes of depression?

　　Depression is one of the most common mental illnesses in our daily lives, the occurrence of depression is to patients and friends of the health of its serious harm, so we must pay attention to the occurrence of depression, timely treatment, then what is the cause of this disease about depression?

　　 The causes of depression:

　　Physical disease: a person is very easy to suffer from some physical diseases in life, but like stroke, heart attack, cancer, chronic pain, diabetes, hormone disorders and advanced diseases these physical diseases may incur depression. Having apathy or not being able to deal with one's physical needs may be a mood response or objective reaction to a physical illness, or it may be a precursor to depression.

　　Personality factors: this is one of the main causes of depression, such as life in the sensitive, suspicious, unstable mood, strong, pessimistic, low self-confidence, poor thought forms, excessive chagrin or feel simply can not control the life of things and other personalities, are prone to depression, some of the personality.

　　Biochemical factors: When a person suffers from depression, there is often a gradual decrease in the number of chemicals called neurotransmitters in the brain. If there is an imbalance between the two neurotransmitters, 5-hydroxytryptophan and norepinephrine, it can lead to depression or anxiety. 5-hydroxytryptophan and norepinephrine decreases often lead to low mood, decreased motivation, and changes in appetite and sex drive.

　　Biological rhythm changes: we are living in some physiological function indicators such as body temperature, sleep, cortisol and other endocrine have biological circadian rhythm changes is on behalf of a person's affective neurological presentations of disorders, the main manifestation of the phase shift, mostly phase forward, that is, the peak time of physiological rhythms earlier, depressed patients with ocular fast-moving sleep ambient period is shortened (i.e., forward), some people think that can be regarded as a depressive disorder biological indicators with conclusive significance.

　　 Symptoms of depression:

　　First, the main manifestations of depression have thinking changes. Obviously slow thinking, feel difficult to think about the topic, often complain that the brain has become stupid, can not think about the topic. Speaking voice low, slow, small amount of words, the past and the future have a distorted perception, excessively degrade themselves, always make themselves useless. As the symptoms worsen, some may develop delusions of self-guilt on the basis of self-reproach and guilt, thinking that they are guilty and will be punished. There may also be poverty, hypochondriacal and nihilistic delusions.

　　Second, the main manifestations of depression have physical symptoms. Most patients are accompanied by sleep disorders, loss of appetite, dyspepsia, weight loss, dry mouth, constipation, loss of libido and a variety of physical discomfort, such as panic, chest tightness, breathlessness, nausea and so on.

　　Third, the main manifestations of depression are mood symptoms. The main feature is depressed mood, which can range from mild moodiness to sadness, depression, bitterness, and even pessimism and exhaustion. Patients often feel heavy, lose enthusiasm for life and work and fun, pessimistic about the future, can not find the value and meaning of life, think "better to live than to die", and accompanied by strong self-reproach, guilt, sense of uselessness, with a negative attitude to their past, present and future.

　　Fourth, the main manifestations of depression are behavioral changes. Activities are reduced, subjective feeling of lack of energy, fatigue, daily activities certainly continue, but mechanical passive. Life in their more broad away from the lively scene, like quiet alone. Severe cases can be silent and immobile, refusing to eat, unable to complete daily life.

　　For the causes of depression this disease we will first give friends introduced here, I hope that we these contents of the introduction, can give the majority of patients and friends to bring help, the occurrence of depression can be said to bring to our health and its serious invasive, so friends of this disease must be timely to treatment.