Introduction to anxiety
Generalized anxiety disorder or GAD is characterized by excessive, exaggerated anxiety and worry about everyday life events. People with symptoms of generalized anxiety disorder tend to always expect disaster and can't stop worrying about health, money, family, work or school. In people with GAD, the worry often is unrealistic or out of proportion for the situation. Daily life becomes a constant state of worry, fear and dread. Eventually, the anxiety so dominates the person's thinking that it interferes with daily functioning, including work, school, social activities and relationships.
What Is Anxiety?
Anxiety is a natural human reaction that involves mind and body. It serves an important basic survival function: Anxiety is an alarm system that is activated whenever a person perceives danger or threat.
When the body and mind react to danger or threat, a person feels physical sensations of anxiety — things like a faster heartbeat and breathing, tense muscles, sweaty palms, a queasy stomach, and trembling hands or legs. These sensations are part of the body's fight-flight response. They are caused by a rush of adrenaline and other chemicals that prepare the body to make a quick getaway from danger. They can be mild or extreme.
The fight-flight response happens instantly when a person senses a threat. It takes a few seconds longer for the thinking part of the brain (the cortex) to process the situation and evaluate whether the threat is real, and if so, how to handle it. If the cortex sends the all-clear signal, the fight-flight response is deactivated and the nervous system can relax.
If the mind reasons that a threat might last, feelings of anxiety might linger, keeping the person alert. Physical sensations such as rapid, shallow breathing; a pounding heart; tense muscles; and sweaty palms might continue, too.
What Are the Symptoms of GAD?
GAD affects the way a person thinks, but the anxiety can lead to physical symptoms, as well. Symptoms of GAD include:
- Excessive, ongoing worry and tension
- An unrealistic view of problems
- Restlessness or a feeling of being "edgy"
- Irritability
- Muscle tension
- Headaches
- Sweating
- Difficulty concentrating
- Nausea
- The need to go to the bathroom frequently
- Tiredness
- Trouble falling or staying asleep
- Trembling
- Being easily startled
- In addition, people with GAD often have other anxiety disorders (such as panic disorder, obsessive-compulsive disorder and phobias), suffer from depression, and/or abuse drugs or alcohol.
What Causes Generalized Anxiety Disorder?
The exact cause of GAD is not fully known, but a number of factors -- including genetics, brain chemistry and environmental stresses -- appear to contribute to its development.
Genetics: Some research suggests that family history plays a part in increasing the likelihood that a person will develop GAD. This means that the tendency to develop GAD may be passed on in families.
Brain chemistry: GAD has been associated with abnormal levels of certain neurotransmitters in the brain. Neurotransmitters are special chemical messengers that help move information from nerve cell to nerve cell. If the neurotransmitters are out of balance, messages cannot get through the brain properly. This can alter the way the brain reacts in certain situations, leading to anxiety.
Environmental factors: Trauma and stressful events, such as abuse, the death of a loved one, divorce, changing jobs or schools, may lead to GAD. GAD also may become worse during periods of stress. The use of and withdrawal from addictive substances, including alcohol, caffeine and nicotine, can also worsen anxiety.
How Are Anxiety Disorders Treated?
Anxiety disorders can be treated by mental health professionals, or therapists. A therapist can look at the symptoms someone is dealing with, diagnose the specific anxiety disorder, and create a plan to help the person get relief.
A particular type of talk therapy called cognitive-behavior therapy (CBT) is often used. In CBT, a person learns new ways to think and act in situations that can cause anxiety, and to manage and deal with stress. The therapist provides support and guidance and teaches new coping skills, such as relaxation techniques or breathing exercises. Sometimes, but not always, medication is used as part of the treatment for anxiety.
How Common Is Generalized Anxiety Disorder?
About 4 million adult Americans suffer from GAD during the course of a year. It most often begins in childhood or adolescence, but can begin in adulthood. It is more common in women than in men.
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