Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest and can lead to a variety of emotional and physical problems. Symptoms of depression are Feelings of sadness, emptiness, angry outbursts, Sleep disturbances, Changes in appetite, Anxiety, Trouble thinking, making decisions etc.
In Australia, it is estimated that about 45 per cent of people will experience a mental health condition in their lifetime and around 1 million Australian adults have depression, and over 2 million have anxiety
To diagnosis Depression various tests like Physical test, Lab tests, Psychological test, Diagnostic and Statistical Manual of Mental Disorders (DSM-5) can be conducted. Medications and psychological counseling (psychotherapy) are very effective for most people with depression. Selective serotonin reuptake inhibitors (SSRIs), Serotonin-norepinephrine reuptake inhibitors (SNRIs), Norepinephrine-dopamine reuptake inhibitors (NDRIs), Atypical antidepressants etc. antidepressant drugs can be used.
Many scientists in Australia looking at post-mortem brain tissue in an attempt to see what is different in the brains of people who had a mental illness and many are investigating the mechanics of how the medicines used to treat mental illness work in the brain.