Panic attacks may also be caused by substances. Discontinuation or marked reduction in the dose of a substance such as a drug (drug withdrawal), for example an antidepressant (antidepressant discontinuation syndrome), can cause a panic attack. According to the Harvard Mental Health Letter, "the most commonly reported side effects of smoking marijuana are anxiety and panic attacks. Studies report that about 20% to 30% of recreational users experience such problems after smoking marijuana."[16]
Generalized Anxiety Disorder is one of the most common anxiety disorders and affects approximately 3.1% of the American adult population. With 6.8 million reported cases among American adults aged 18 and older, the average age of onset is 31 years old. While it can occur at any point of life, the most common points of onset occur between childhood and middle age. If you are a woman, you are twice as likely to suffer from Generalized Anxiety Disorder than men.

Panic attacks can happen during the day or night. Some people have one panic attack then don't ever experience another, or you might find that you have them regularly, or several in a short space of time. You might notice that particular places, situations or activities seem to trigger panic attacks. For example, they might happen before a stressful appointment.
The philosopher Søren Kierkegaard, in The Concept of Anxiety (1844), described anxiety or dread associated with the "dizziness of freedom" and suggested the possibility for positive resolution of anxiety through the self-conscious exercise of responsibility and choosing. In Art and Artist (1932), the psychologist Otto Rank wrote that the psychological trauma of birth was the pre-eminent human symbol of existential anxiety and encompasses the creative person's simultaneous fear of – and desire for – separation, individuation, and differentiation.
Yes. My anxiety started really bad in college when I could no longer play football and I lost the love of my life and on top of that I was broke. 2 major things that I loved was taken from me. And they both could have been prevented and when I came home from college I had no job no money little friends extremely little support and I felt like a failure. I had no directions in life. My mother never understood my anxiety so she didn’t help treat it with care . To her it was pretty much get over it. I felt like I was losing touch with reality. To this day I still struggle with it, but therapy and coping techniques keeps me somewhat grounded and leveled.
An evolutionary psychology explanation is that increased anxiety serves the purpose of increased vigilance regarding potential threats in the environment as well as increased tendency to take proactive actions regarding such possible threats. This may cause false positive reactions but an individual suffering from anxiety may also avoid real threats. This may explain why anxious people are less likely to die due to accidents.[86]
Social anxiety disorder (previously called social phobia): People with social anxiety disorder have a general intense fear of, or anxiety toward, social or performance situations. They worry that actions or behaviors associated with their anxiety will be negatively evaluated by others, leading them to feel embarrassed. This worry often causes people with social anxiety to avoid social situations. Social anxiety disorder can manifest in a range of situations, such as within the workplace or the school environment.
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