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Anxiety disorders are a common condition.
The most common cause of this condition is thought to be genetic. Thus the condition often runs in the families.
Stress factors tend to aggravate and precipitate the condition in some patients.
The exact cause of anxiety disorders is unknown. However, research has pinpointed certain possible triggers.
Causes of anxiety disorders may be summarized as follows (1, 2, 3, 4) –
This is seen in patients with Post-traumatic stress disorder (PTSD). A traumatic experience (e.g. sexual or physical injury or harm in the past) may lead to fears and anxiety later in life.
Anxiety disorders are caused due to an imbalance of certain chemicals in the brain. These are actually chemical messengers that carry information within the brain and are called neurotransmitters.
Two neurotransmitters that relate to anxiety disorders are serotonin and noradrenaline.
The misbalance of these neurotransmitters leads to certain physical and mood changes and manifestations.
The most common problem is low serotonin and high noradrenaline.
Disruption of the gamma-aminobutyric acid (GABA) system in the brain is another underlying cause of anxiety disorders.
In Obsessive compulsive disorders another neurotransmitter dopamine might play a role.