What is depression definition Google Scholar?
Clinically, depressive disorders are characterised by the prolonged presence of specific somatic and cognitive abnormalities in combination with sad, empty or irritable mood, or anhedonia (American Psychiatric Association, 2013).
What does research say about depression?
Research suggests that depression doesn’t spring from simply having too much or too little of certain brain chemicals. Rather, there are many possible causes of depression, including faulty mood regulation by the brain, genetic vulnerability, and stressful life events.
What is depression according to authors?
“The grey drizzle of horror,” author William Styron memorably called depression. The mood disorder may descend seemingly out of the blue, or it may come on the heels of a defeat or personal loss, producing persistent feelings of sadness, worthlessness, hopelessness, helplessness, pessimism, or guilt.
Is there scientific evidence for depression?
Another scientific breakthrough on the topic of depression found that rather than a chemical problem in the brain, depression may actually be related to cell growth and brain connections.
What is depression in psychology PDF?
INTRODUCTION: Depression is a common. mental disorder that presents with depressed. mood, loss of interest or pleasure, feelings of. guilt or low self-worth, disturbed sleep or. appetite, low energy, and poor concentration.
What are the chemicals behind depression?
Low levels of norepinephrine, serotonin, and dopamine are also associated with various aspects of depression. When our bodies produce low levels of these neurotransmitters, our odds of experiencing symptoms of depression can increase.
What hormone is released during depression?
Neurotransmitters in the brain — specifically serotonin, dopamine, or norepinephrine — affect feelings of happiness and pleasure and may be out of balance in people with depression. Antidepressants work to balance these neurotransmitters, mainly serotonin.