Anxiety disorders are characterized by a general feature of excessive fear (i.e. emotional response to perceived or real threat) and/or anxiety (i.e. worrying about a future threat) and can have negative behavioral and emotional consequences. Obsessive-compulsive and related disorders are characterized by obsessive, intrusive thoughts (e.g., constantly worrying about staying clean, or about one's body size) that trigger related, compulsive behaviors (e.g. repeated hand-washing, or excessive exercise). These behaviors are performed to alleviate the anxiety associated with the obsessive thoughts. Trauma- and stressor- related anxiety disorders are related to the experience of a trauma (e.g., unexpected death of a loved one, a car accident, or a violent incident) or stressor (e.g., divorce, beginning college, moving).
The Diagnostic and Statistical Manual of Mental Disorders (DSM) is the handbook used for diagnosis of mental health disorders, and is widely used by health care professionals around the world. For each disorder, the DSM has a description of symptoms and other criteria to diagnose the disorder. The DSM is important, because it allows different clinicians and/or researchers to use the same language when discussing mental health disorders. The first DSM was published in 1952 and has been updated several times after new research and knowledge became available. In 2013, the most recent version of the DSM, the DSM-5, was released. There are a few important differences with its predecessor DSM-IV regarding anxiety disorders. First, Obsessive Compulsive Disorder (OCD) is not part of the anxiety disorders any more, but now has its own category: Obsessive-Compulsive, Stereotypic and related disorders. Second, Post-Traumatic Stress Disorder (PTSD) now also has its own category: Trauma and Stressor-related Disorders.
Until recently, panic disorder was not distinguished from agoraphobia (distressing anxiety resulting from being outside the home, travelling via public transit, being in open or claustrophobic environments, or being in crowds that generally leads to extreme avoidance due to fear of not being able to escape in those situations; APA, 2013). As it stands in the current Diagnostic and Statistical Manual of Mental Disorders - 5 agoraphobia is one of the most common disorders to co-occur with panic disorder. Current estimates contend that just under 2% of teens and adults have agoraphobia (Kessler et al., 2012). Often, people associate panic attacks or their panic disorder with certain places, people, or events and the fear of another attack occurring can lead to comorbid fears of the location or idea that there is no escape, which leads to extreme avoidance. Panic disorder can also occur simultaneously with other anxiety disorders, such as Generalized Anxiety Disorder (GAD) and/or Social Anxiety Disorder (SAD), for example.

Medications are also a common form of treatment for Generalized Anxiety Disorder. The most common types of medications prescribed to individuals living with this form of anxiety include anti-depressants, anti-anxiety drugs, and in some cases, sedatives. Antidepressants are used to treat depression, but have been found effective in the treatment of anxiety as well. They commonly take a couple of weeks to start taking effect and may cause some mild side effects, including headache, nausea, or difficulty sleeping. Most of the side effects are mild and tend to subside within a few weeks. Anti-anxiety medication is also often prescribed to help individuals cope with Generalized Anxiety Disorder. These types of drugs are powerful in their treatment of this type of anxiety; one of the most commonly prescribed types is a drug called buspirone often under the brand nane Buspar.

Shortness of breath and chest pain are the predominant symptoms. People experiencing a panic attack may incorrectly attribute them to a heart attack and thus seek treatment in an emergency room. Because chest pain and shortness of breath are hallmark symptoms of cardiovascular illnesses, including unstable angina and myocardial infarction (heart attack), a diagnosis of exclusion (ruling out other conditions) must be performed before diagnosing a panic attack. It is especially important to do this for people whose mental health and heart health statuses are unknown. This can be done using an electrocardiogram and mental health assessments.
At least 6 million Americans suffer from panic attacks and panic disorder both conditions classified as anxiety disorders. According to the Anxiety and Depression Association of America (ADAA), about 2-3% of Americans experience panic disorder in a given year and it is twice as common in women as in men. Panic disorder typically affects individuals when they’re in their 20s but is also seen in young children, adolescents, and older adults.

Anxiety disorders are the most common mental health disorder in the U.S., affecting more than 18% of the population. They are even more common among children, affecting an estimated 25% of children between the ages of 13 and 18. The most common anxiety disorders are Specific Phobias, affecting 8.7% of the population, and Social Anxiety, affecting 6.8% of the population.
Although anxiety is often accompanied by physical symptoms, such as a racing heart or knots in your stomach, what differentiates a panic attack from other anxiety symptoms is the intensity and duration of the symptoms. Panic attacks typically reach their peak level of intensity in 10 minutes or less and then begin to subside. Due to the intensity of the symptoms and their tendency to mimic those of heart disease, thyroid problems, breathing disorders, and other illnesses, people with panic disorder often make many visits to emergency rooms or doctors' offices, convinced they have a life-threatening issue.
These episodes are a serious health problem in the U.S. At least 20% of adult Americans, or about 60 million people, will suffer from panic at some point in their lives. About 1.7% of adult Americans, or about 3 million people, will have full-blown panic disorder at some time in their lives, women twice as often as men. The most common age at which people have their first panic attack (onset) is between 15 and 19 years of age. Panic attacks are significantly different from other types of anxiety, in that panic attacks are very sudden and often unexpected, appear to be unprovoked, and are often disabling.
The theologian Paul Tillich characterized existential anxiety[23] as "the state in which a being is aware of its possible nonbeing" and he listed three categories for the nonbeing and resulting anxiety: ontic (fate and death), moral (guilt and condemnation), and spiritual (emptiness and meaninglessness). According to Tillich, the last of these three types of existential anxiety, i.e. spiritual anxiety, is predominant in modern times while the others were predominant in earlier periods. Tillich argues that this anxiety can be accepted as part of the human condition or it can be resisted but with negative consequences. In its pathological form, spiritual anxiety may tend to "drive the person toward the creation of certitude in systems of meaning which are supported by tradition and authority" even though such "undoubted certitude is not built on the rock of reality".[23]
Once you are under enough stress, almost anything can set off a panic attack. Suppose you are under a lot of stress, but still managing. If you add even more stress, your brain will begin to feel under siege. Your body will respond by releasing adrenaline as part of the fight or flight response. That will cause more anxiety, which will create a vicious feedback that will turn into a panic disorder.
People with generalized anxiety disorder (GAD) display excessive anxiety or worry, most days for at least 6 months, about a number of things such as personal health, work, social interactions, and everyday routine life circumstances. The fear and anxiety can cause significant problems in areas of their life, such as social interactions, school, and work.