These include bereavement, divorce, work issues, relationships with friends and family, financial problems, medical concerns, or acute stress. Those with less successful coping strategies, or previous life trauma are more suceptible.
Custom Search Biological Causes of Depression Biological causes of clinical depression continue to be studied extensively. Great progress has been made in the understanding of brain function, the influence of neurotransmitters and hormones, and other biological processes, as well as how they may relate to the development of depression.
Brain Function in Depression The brain is the "command center" of the human body. It controls the basic functions of our bodies, our movements, and our thoughts and emotions.
Researchers studying clinical depression tend to look at several aspects of brain function including the structures of the limbic system and the function of neurotransmitters within neurons. Limbic System Those who research clinical depression have been interested in a particular part of the brain called the limbic system.
This is the area of the brain that regulates activities such as emotions, physical and sexual drives, and the stress response. There are various structures The major causes of depression the limbic system that are of particular importance.
The hypothalamus is a small structure located at the base of the brain. It is responsible for many basic functions such as body temperature, sleep, appetite, sexual drive, stress reaction, and the regulation of other activities.
The hypothalamus also controls the function of the pituitary gland which in turn regulates key hormones. Other structures within the limbic system that are associated with emotional reaction are the amygdala and hippocampus.
The activities of the limbic are so important and complex that disturbances in any part of it, including how neurotransmitters function, could affect your mood and behavior. Neurotransmitters and Neurons To understand what happens in the brain when a person becomes clinically depressed as well as how antidepressant medications work, it is first important to learn a bit about the function of neurons and neurotransmitters.
Within the brain, there are special chemicals called neurotransmitters that carry out many very important functions. Essentially, they help transfer messages throughout structures of the brain's nerve cells. These nerve cells, called neurons, are organized to control specialized activities.
We each have somewhere between billion neurons within our brains. Whenever we do anything, react, feel emotions, think, our neurons transmit messages in the form of electrical impulses from one cell to another. Because they move so quickly, our brains can react instantaneously to stimuli such as pain.
A neuron is made up of a cell body, an axon, and numerous branching dendrites. Chemical messages pass through the brain by traveling through these neuronal structures. First, it begins as an electrical impulse that is picked up by one of the dendrites of the neuron.
Next, the impulse moves through the cell body then travels down the axon. When it reaches the axon the electrical impulse is changed to a chemical impulse.
These chemical impulses, or neurotransmitters, released by the axon have the duty of carrying messages from one neuron to another.
When the message is picked up by the dendrite of a neighboring neuron, it is changed back in to an electrical impulse and process begins again. Neurons do not actually touch one another.
Instead, the chemical messenger passes from one neuron to another through a small narrow gap, called a synapse, which separates the neurons.
Neurotransmitters travel from neuron to neuron in an orderly fashion. They are specifically shaped so that after they pass from a neuron into the synapse, they can be received onto certain sites, called receptors, on a neighboring neuron. Neurotransmitters can fit a number of different receptors, but receptor sites can only receive specific types of neurotransmitters.
Upon landing at the receptor site of neuron, the chemical message of the neurotransmitter may either be changed into an electrical impulse and continue on its way through the next neuron, or it may stop where it is. In either case the neurotransmitter releases from the receptor site and floats back into the synapse.
It is then removed from the synapse in one of two ways. The neurotransmitter may be broken down by a chemical called monoamine oxidase, or it may be taken back in by the neuron that originally released it.
The latter case is called reuptake. Of the 30 or so neurotransmitters that have been identified, researchers have discovered associations between clinical depression and the function of three primary ones: These three neurotransmitters function within structures of the brain that regulate emotions, reactions to stress, and the physical drives of sleep, appetite, and sexuality.
Structures that have received a great deal of attention from depression researchers include the limbic system and hypothalamus. Theories about how neurotransmitters may be related to a person's mood have been based upon the effects that antidepressant medications can have on relieving depression in some people.
It is believed that these medications are effective because they regulate the amount of specific neurotransmitters in the brain. However, the role that neurotransmitters play in the development or treatment of clinical depression is not completely clear.
For instance, it has been shown that many people who are depressed have low levels of the neurotransmitter norepinephrine.Depression is a mood disorder characterized by low mood, a feeling of sadness, and a general loss of interest in things.
Depression is not a short-term problem and can last for months. There are. Diagnosis. The ICD is used around the world to diagnose people with illnesses like depression.
According to the ICD, for a person to be diagnosed with depression, their symptoms have to last for at least two weeks. The symptoms must happen every day, or almost every day.
These symptoms also have to cause problems in a person's life (like their work life, family life, social life, or. Have you ever wondered what causes clinical depression? Perhaps you have been diagnosed with major depression, and that's made you question why some people get depressed while others don't.
Depression is an extremely complex disease. It occurs for a variety of reasons. Some people experience. Major depressive disorder (MDD), also known simply as depression, is a mental disorder characterized by at least two weeks of low mood that is present across most situations.
It is often accompanied by low self-esteem, loss of interest in normally enjoyable activities, low energy, and pain without a clear cause. People may also occasionally have false beliefs or see or hear things that .
*/ Children's Depression Checklist Co-occurring Disorders and Depression Dealing with Treatment-resistant Depression: What to Do When Treatment Doesn't Seem to Work Depression and African Americans Depression in Older Adults. With major depression, it may be difficult to work, study, sleep, eat, and enjoy friends and monstermanfilm.com people have clinical depression only once in their life, while others have it several.