What are the causes of depression?

　　In life depression is more terrible, more friends because of different reasons for the symptoms of depression, thus harming the physical and mental health of patients, we should pay attention to depression, and need to know more about the triggering factors of depression can be, to see what is the cause of the disease of depression.

　　 The causes of depression:

　　Biochemical factors: because when a person suffers from has been in the week, his brain will often be some of the chemicals known as neurotransmitters show a gradual decrease in the phenomenon. 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. Physical illnesses, it is very easy for a person to suffer from a number of physical illnesses in life, but physical illnesses like stroke, heart attack, cancer, chronic pain, diabetes, hormonal disorders, and advanced illnesses can 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 elements: this is one of the main causes of depression, such as life in the sensitive, suspicious, moody, strong, pessimistic, low self-confidence, have bad thought forms, excessive chagrin or feel simply can not control life things, etc. Personality, are prone to depression, some of the personality. Biological rhythm changes, we live in some physiological function indicators such as body temperature, sleep, cortisol and other endocrine 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, most of the phase forward, that is, the peak of the physiological rhythm of the time earlier, the depressed patient's eyes fast-moving sleep ambient period is shortened (i.e., the forward shift), some people think that can be regarded as the depression of the 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 is low, slow, the amount of language is small, the past and the future have distorted cognition, 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. The main manifestations of depression are somatic 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.

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

　　Comprehensive understanding of this knowledge, we understand the factors that triggered the emergence of depression is what, depression brings quite a lot of trouble, will also infringe on the health of patients, so friends should be more vigilant against the emergence of depression, must be clear to understand the causes of this disease, do some depression prevention work.