The typical course of panic disorder begins in adolescence and peaks in early to mid-twenties, with symptoms rarely present in children under the age of 14 or in older adults over the age of 64 (Kessler et al., 2012). Caregivers can look for symptoms of panic attacks in adolescents, followed by notable changes in their behavior (e.g., avoiding experiencing strong physical sensations), to help potentially identify the onset of panic disorder. Panic disorder is most likely to develop between the ages of 20-24 years and although females are more likely to have panic disorder, there are no significant sex differences in how the disorder presents (McLean et al., 2011).
It is important to note that many people may experience a panic attack once, or even a few times during their lives and may never develop an anxiety disorder. “Anxiety attacks” that are correlated to specific real dangers are not usually a problem. In fact, this type of anxiety is normal. Since the symptoms of anxiety and panic attacks may mimic many other medical and psychological disorders, it is important to review your symptoms with your doctor for an accurate diagnosis.
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.
Complementary and Alternative Therapies can be used in conjunction with conventional therapies to reduce the symptoms of anxiety. There is a growing interest in these types of alternative therapies, since they are non-invasive and can be useful to patients. They are typically not intended to replace conventional therapies but rather can be an adjunct therapy that can improve the overall quality of life of patients.
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]
Generalized Anxiety Disorder is different than having a phobia about something. People with phobias are fearful of something in particular – for example, spiders, heights, or speaking in public. If you have Generalized Anxiety Disorder, you have an uneasy feeling about life in general. Often associated with feelings of dread or unease, you are in a state of constant worry over everything. If a friend doesn’t call you back within an hour, you may start to worry you did something wrong and the friend is upset with you. If you are waiting for someone to pick you up and he is a few minutes late – you may start to fear the worst – that he was in an accident, instead of thinking something more minor, like he got stuck in traffic. The feelings are not as intense as those that occur during a panic attack episode; however, the feelings are long-lasting. This results in having anxiety toward your life in general and the inability to relax – what some may consider far more debilitating than a specific phobia to a certain thing or situation, which you could possible avoid. There is no “off” switch. If you are suffering from Generalized Anxiety Disorder, you are experiencing a constant state of worry – and you cannot avoid it, because life, in general, is causing you anxiety.
While the use of drugs in treating panic attacks can be very successful, it is generally recommended that people also be in some form of therapy, such as cognitive behavioral therapy. Drug treatments are usually used throughout the duration of panic attack symptoms, and discontinued after the patient has been free of symptoms for at least six months. It is usually safest to withdraw from these drugs gradually while undergoing therapy.[14] While drug treatment seems promising for children and adolescents, they are at an increased risk of suicide while taking these medications and their well-being should be monitored closely.[59]
A panic attack begins suddenly and unexpectedly and most often peaks within 10 to 20 minutes. At times, the resulting anxiety may last a couple of hours. Panic attacks can occur whether the person is calm or anxious. Recalling a past attack may trigger a new one. The frequency of panic attacks can vary, and for some people the fear of having an additional attack may lead them to avoid situations where escape may be difficult, such as being in a crowd or traveling in a car or bus. 
I don’t clearly know if it’s a panic attack. Sometimes I feel left out or secluded and then the feelings come over. Sometimes if I feel things are being unfair, it triggers again. I am diabetic patient suffering from fights to take medicines regualry. If this feeling of loneliness or being left out occurs, then i just can’t help but feel a lump in my throat, as if I can’t breathe. I get very frustrated, restless and often feel like crying but no voice will come out. Sometimes, heck no one ever understands my feelings and pain and it just gets worse. Mood swings, Shivering, body pain, restlessness dizzyness, headache, are few symptoms. And then I start thinking of how useless I am and there is a reason why I am not chosen for things thus making me feel like even more shit.
While the term "test anxiety" refers specifically to students,[33] many workers share the same experience with regard to their career or profession. The fear of failing at a task and being negatively evaluated for failure can have a similarly negative effect on the adult.[34] Management of test anxiety focuses on achieving relaxation and developing mechanisms to manage anxiety.[33]
Antidepressants called selective serotonin reuptake inhibitors (SSRIs) and serotonin-norepinephrine reuptake inhibitors (SNRIs) are commonly used as first-line treatments for anxiety. Less-commonly used — but effective — treatments for anxiety disorders are older classes of antidepressants, such as tricyclic antidepressants and monoamine oxidase inhibitors (MAOIs).
There is a long list of signs and symptoms of an anxiety attack. But because each body is somewhat chemically unique, anxiety attacks can affect each person differently. Consequently, anxiety attack symptoms can vary from person to person in type or kind, number, intensity, duration, and frequency. If your symptoms don’t exactly match this list, that doesn’t mean you don’t have anxiety attacks. It simply means that your body is responding to them slightly differently.