We have all felt anxiety—the nervousness before a date, test, competition, presentation—but what exactly is it? Anxiety is our body's way of preparing to face a challenge. Our heart pumps more blood and oxygen so we are ready for action. We are alert and perform physical and emotional tasks more efficiently. (See also Test Anxiety for tips on dealing with tests.)
While everyone experiences brief episodes of intense anxiety from time to time, and a great many people experience one or two anxiety attacks over the course of their lifetime, anxiety attack disorder occurs when these attacks become frequent or persistent, begin interfering with or restricting normal lifestyle, or when the individual becomes afraid of them. Once established, anxiety attack disorder can be very debilitating.
Genetics and family history (e.g. parental anxiety) may put an individual at increased risk of an anxiety disorder, but generally external stimuli will trigger its onset or exacerbation.[57] Estimates of genetic influence on anxiety, based on studies of twins, range from 25-40% depending on the specific type and age-group under study. For example, genetic differences account for about 43% of variance in panic disorder and 28% in generalized anxiety disorder.[58] Longitudinal twin studies have shown the moderate stability of anxiety from childhood through to adulthood is mainly influenced by stability in genetic influence.[60][61] When investigating how anxiety is passed on from parents to children, it is important to account for sharing of genes as well as environments, for example using the intergenerational children-of-twins design.[62]
If you believe you are suffering from Generalized Anxiety Disorder, your doctor will perform a variety of physical exams as well as mental health checks. You might first go to your doctor complaining of constant headaches and trouble sleeping. After he or she rules out any underlying medical conditions that are causing your physical symptoms, s/he may refer you to a mental health specialist for further diagnosis. Your mental health specialist will ask you a series of psychological questions to get a better understanding of your condition. To be clinically diagnosed with Generalized Anxiety Disorder, your doctor and/or mental health provider will assess the length of time you have been suffering from excessive worry and anxiety, your difficulty in controlling your anxiety, how your anxiety interferes with your daily life, and if you are experiencing fatigue, restlessness, irritability, muscle tension, sleep problems, and difficulty concentrating.
According to the American Psychological Association, "most specialists agree that a combination of cognitive and behavioral therapies are the best treatment for panic disorder. Medication might also be appropriate in some cases."[50] The first part of therapy is largely informational; many people are greatly helped by simply understanding exactly what panic disorder is and how many others suffer from it. Many people who suffer from panic disorder are worried that their panic attacks mean they are "going crazy" or that the panic might induce a heart attack. Cognitive restructuring helps people replace those thoughts with more realistic, positive ways of viewing the attacks.[51] Avoidance behavior is one of the key aspects that prevent people with frequent panic attacks from functioning healthily.[14] Exposure therapy,[52] which includes repeated and prolonged confrontation with feared situations and body sensations, helps weaken anxiety responses to these external and internal stimuli and reinforce realistic ways of viewing panic symptoms.
Panic attacks (or anxiety attacks - the terms are interchangeable) are intense episodes of fear which are so powerful that they trick you into fearing that you are dying, going crazy, about to faint, or losing control of yourself in some vital way. The symptoms of a panic attack feel so powerful and threatening that they convince you that you're in terrible danger.

Simply put - agoraphobia means that you avoid a lot of ordinary activities and situations for fear of having panic attacks. To most people who get this diagnosis, the term sounds pretty scary, but that's all it means. It does not mean you are or will become house bound. That can happen to people, and is an extremely severe case of agoraphobia, but the great majority of people with agoraphobia do not experience it to that extent.

Sometimes panic can occur “out of the blue”, when you’re not in any danger. These panic episodes are called panic attacks. Because you’re not in any danger, these panic attacks aren’t useful; and in fact, they can cause significant problems. If someone experiences many panic attacks, he or she often begins to worry about having another panic attack and the anticipation causes him or her to feel even more anxiety. Sometimes this worry becomes so strong that he or she will avoid going to places where a panic attack might happen. For some people, this may severely limit where they feel comfortable going (such as: school, the mall, driving on the highway, etc.), resulting in another mental disorder called Agoraphobia.
A large brief current is passed through a wire coil that is placed on the front of the head which is near the areas that regulate mood. The transient current creates a magnetic field that produces an electric current in the brain and stimulates nerve cells in the targeted region. The current typically only affects brain regions that are 5 centimeters deep into the brain which allows doctors to selectively target which brain regions to treat. Typical sessions lasts 30-60 minutes and do not require anesthesia. Sessions are administered 4-5 times a week for about 6 weeks. Although the procedure is painless, patients may experience a gentle tapping in the area of the head where the current is being administered. Neuromodulation has very few side effects but they may include headaches, slight tingling or discomfort in the area in which the coil is placed. rTMS may be administered alone or in combination with medication and/or psychotherapy.
Some benefits of benzodiazepines are that they are effective in relieving anxiety and take effect more quickly than antidepressant medications often prescribed for anxiety. Some drawbacks of benzodiazepines are that people can build up a tolerance to them if they are taken over a long period of time and they may need higher and higher doses to get the same effect. Some people may even become dependent on them.

I almost had a breakdown yesterday, I got mad at my sister. She told me we’d hang out then later she bailed me. I was so mad I poured all her body lotion in the sink, I was looking for her Victoria’s Secret perfume so I could break it into pieces but couldn’t find it. (Yes, I think I have anger issues too, might need anger management). I was already frustrated with my new job. I am slightly a perfectionist and I’m having a hard time with work I’m not too familiar with. I almost broke down or did broke down but hid it very well. My heart can’t stop pounding the whole day, whole night. I went to sleep since I was so tired but I woke up in the middle of the night with my heart beating so loud and fast. Until in the morning I can’t control it. I have a feeling I need to visit my psychiatrist again. I miss talking to her though. But the medications are so expensive it makes me depress more.
Anxiety disorders are caused by a complex combination of genetic and environmental factors.[47]  To be diagnosed, symptoms typically need to be present for at least six months, be more than would be expected for the situation, and decrease a person’s ability to function in their daily lives.[10][49] Other problems that may result in similar symptoms include hyperthyroidism, heart disease, caffeine, alcohol, or cannabis use, and withdrawal from certain drugs, among others.[49][7]
^ Nivard, M. G.; Dolan, C. V.; Kendler, K. S.; Kan, K.-J.; Willemsen, G.; van Beijsterveldt, C. E. M.; Lindauer, R. J. L.; van Beek, J. H. D. A.; Geels, L. M. (2014-09-04). "Stability in symptoms of anxiety and depression as a function of genotype and environment: a longitudinal twin study from ages 3 to 63 years". Psychological Medicine. 45 (05): 1039–1049. doi:10.1017/s003329171400213x. ISSN 0033-2917.
Clinical trials are research studies that look at new ways to prevent, detect, or treat diseases and conditions, including anxiety disorders. During clinical trials, treatments might be new drugs or new combinations of drugs, new surgical procedures or devices, new psychotherapies, or new ways to use existing treatments. The goal of clinical trials is to determine if a new test or treatment works and is safe.
While everyone experiences brief episodes of intense anxiety from time to time, and a great many people experience one or two anxiety attacks over the course of their lifetime, anxiety attack disorder occurs when these attacks become frequent or persistent, begin interfering with or restricting normal lifestyle, or when the individual becomes afraid of them. Once established, anxiety attack disorder can be very debilitating.