Since anxiety disorders are a group of related conditions rather than a single disorder, they can look very different from person to person. One individual may suffer from intense anxiety attacks that strike without warning, while another gets panicky at the thought of mingling at a party. Someone else may struggle with a disabling fear of driving, or uncontrollable, intrusive thoughts. Yet another may live in a constant state of tension, worrying about anything and everything. But despite their different forms, all anxiety disorders illicit an intense fear or anxiety out of proportion to the situation at hand.
Social Anxiety Disorder;Fear of social situations in which the person is exposed to unfamiliar people or to possible scrutiny by others. The individual fears that he or she will act in a way (or show anxiety symptoms) that will be embarrassing and humiliating, often times leading to avoidance of social situations and severe distress when participation in social situations can't be avoided. 
Practice relaxation techniques. When practiced regularly, activities such as yoga, meditation, and progressive muscle relaxation strengthen the body’s relaxation response—the opposite of the stress response involved in anxiety and panic. And not only do these relaxation practices promote relaxation, but they also increase feelings of joy and equanimity.
Panic attacks are common among all anxiety disorders but what sets panic disorder apart is that panic attacks are unexpected and occur "out of the blue" without an obvious trigger (American Psychiatric Association, 2013; Craske & Barlow, 2007). These unexpected panic attacks must be associated with a significant change in behavior or be followed by at least one month of persistent worry about having another attack or about what will happen if you have another panic attack.
“Panic disorder is diagnosed if the individual has recurrent panic attacks (minimum four in a four-week period), and at least one of the attacks is accompanied by one or more physical symptoms, including persistent concern about having another attack, worry about the implication or consequences of the attack (i.e., having a heart attack), and/or a significant change in behaviour due to the attacks, such as quitting a job.7 In addition, the panic attacks cannot be due to the physiological effects of a substance or another general medical condition.”
Panic Disorder: People with panic disorder have panic attacks with feelings of terror that strike suddenly and repeatedly with no warning. During the attacks, individuals may feel like they can't breathe, have lost control, are having a heart attack or even that they are dying. Physical symptoms may include chest pain, dizziness, nausea, sweating, tingling or numbness, and a racing heartbeat. Some people will have one isolated attack, while others will develop a long term panic disorder; either way, there is often high anxiety between attacks because there is no way of knowing when the next one will occur. Panic disorders often begin early in adulthood. Many people with panic disorder also suffer from agoraphobia (abnormal fear of open or public places.). See more on Panic Attacks.
Anxiety is an emotion characterized by an unpleasant state of inner turmoil, often accompanied by nervous behaviour such as pacing back and forth, somatic complaints, and rumination. It is the subjectively unpleasant feelings of dread over anticipated events, such as the feeling of imminent death.[need quotation to verify] Anxiety is not the same as fear, which is a response to a real or perceived immediate threat, whereas anxiety involves the expectation of future threat. Anxiety is a feeling of uneasiness and worry, usually generalized and unfocused as an overreaction to a situation that is only subjectively seen as menacing. It is often accompanied by muscular tension, restlessness, fatigue and problems in concentration. Anxiety can be appropriate, but when experienced regularly the individual may suffer from an anxiety disorder.
Anxiety disorders differ from normal feelings of nervousness or anxiousness and involve excessive fear or anxiety. Anxiety disorders are the most common of mental disorders and affect more than 25 million Americans. But anxiety disorders are treatable and a number of effective treatments are available. Treatment helps most people lead normal productive lives.
Poor coping skills (e.g., rigidity/inflexible problem solving, denial, avoidance, impulsivity, extreme self-expectation, negative thoughts, affective instability, and inability to focus on problems) are associated with anxiety. Anxiety is also linked and perpetuated by the person's own pessimistic outcome expectancy and how they cope with feedback negativity. Temperament (e.g., neuroticism) and attitudes (e.g. pessimism) have been found to be risk factors for anxiety.
If you’ve ever had a panic attack, you’ll know it can be both a terrifying experience and exhausting experience. Panic disorder is a diagnosis given to people who experience recurrent unexpected panic attacks—that is, the attack appears to occur from out of the blue. Panic attack symptoms include sweating, shaking, shortness of breath, feelings of choking, chest pain, and a fear of dying.
One of the scariest early experiences in panic disorder is having a panic attack and not knowing what is happening to your body. By learning more about panic attacks and panic disorder, you can start to label and identify the experience that you are having. Although the experience of panic attacks is very distressing, having a panic attack will not cause you to die or to completely lose control and they do not mean that you are going crazy. Sometimes, just knowing what is going on can help people to feel better. For example, the next time you have a panic attack, you can tell yourself "this is anxiety. I have felt this before and I was okay."
But over time, you may find yourself experiencing more panic attacks, in a variety of circumstances. Most of these will not be entirely unexpected. Most subsequent attacks occur in response to various cues such as entering a crowded area; a traffic jam; or simply worrying about having a panic attack. But there may still be some surprises: for instance, you might have a nocturnal panic attack, which wakes you out of a sound sleep. Or you might find yourself experiencing odd feelings of depersonalization as you kill some time with friends or colleagues.
But flashbacks may occur with other types of anxiety as well. Some research, including a 2006 study in the Journal of Anxiety Disorders, suggests that some people with social anxiety have PTSD-like flashbacks of experiences that might not seem obviously traumatic, such as being publicly ridiculed. These people may even avoid reminders of the experience—another symptom reminiscent of PTSD.
Neural circuitry involving the amygdala (which regulates emotions like anxiety and fear, stimulating the HPA Axis and sympathetic nervous system) and hippocampus (which is implicated in emotional memory along with the amygdala) is thought to underlie anxiety. People who have anxiety tend to show high activity in response to emotional stimuli in the amygdala. Some writers believe that excessive anxiety can lead to an overpotentiation of the limbic system (which includes the amygdala and nucleus accumbens), giving increased future anxiety, but this does not appear to have been proven.
Had my first panic attack today and wanted to be sure about what I was experiencing. I sat there crying hysterically, hyperventilating, chest shaking, my hands went very numb. Took me about 10 minutes to get sort of calm, sat in the shower for about half an hour afterwards to fully calm myself down. Every time I tried to focus on my breathing and taking longer breaths I would start hyperventilating again. Felt like I was choking, awful awful experience.
It is important to note that genetic factors can also bestow resilience to anxiety disorders, and the field continues to pursue large-scale genomics studies to identify novel genetic factors that are associated with anxiety disorders in hopes of better understanding biological pathways that: 1) contribute to the development and maintenance of anxiety; and 2) may lead to better treatment for these disorders. Most people are not aware of what specific genetic markers they may have that confer risk for anxiety disorders, so a straightforward way to approximate genetic risk is if an individual has a history of anxiety disorders in their family. While both nature and nurture can be at play with family history, if several people have anxiety disorders it is likely that a genetic vulnerability to anxiety exists in that family.
Some types of drugs may work better for specific types of anxiety disorders, so people should work closely with their doctor to identify which medication is best for them. Certain substances such as caffeine, some over-the-counter cold medicines, illicit drugs, and herbal supplements may aggravate the symptoms of anxiety disorders or interact with prescribed medication. Patients should talk with their doctor, so they can learn which substances are safe and which to avoid.