Panic disorder is characterized by uncontrollable, recurrent episodes of panic and fear that peak within minutes. Panic attacks are accompanied by physical manifestations, such as heart palpitations, sweating, and dizziness as well as the fear of dying or becoming insane. Worry about having an attack may lead to additional anxiety and avoidance behaviors or to other problems in functioning.

Women are more than two times as likely as men to be diagnosed with an anxiety disorder. (6) It’s not clear why this is the case, but researchers have theorized that it may be due to a combination of social and biological factors. Scientists are still investigating the complex role that sex plays in brain chemistry, but some research suggests that in women, the amygdala, which is the part of the brain responsible for processing potential threats, may be more sensitive to negative stimuli and may hold on to the memory of it longer. (7) 


Hyperventilation syndrome may occur when a person breathes from the chest, which can lead to overbreathing (exhaling excessive carbon dioxide in relation to the amount of oxygen in one's bloodstream). Hyperventilation syndrome can cause respiratory alkalosis and hypocapnia. This syndrome often involves prominent mouth breathing as well. This causes a cluster of symptoms, including rapid heart beat, dizziness, and lightheadedness, which can trigger panic attacks.[12]
Panic attacks may also occur due to short-term stressors. Significant personal loss, including an emotional attachment to a romantic partner, life transitions, and significant life changes may all trigger a panic attack to occur. A person with an anxious temperament, excessive need for reassurance, hypochondriacal fears,[14] overcautious view of the world,[9] and cumulative stress have been correlated with panic attacks. In adolescents, social transitions may also be a cause.[15]

A nurse with a master's or doctoral degree in mental health disorders. A psychiatric nurse can diagnose and treat mental health disorders. They mainly provide psychotherapy but in some states that can also prescribe medications. Psychiatric nurses also serve as patient advocates and provide case-management services. They often work in private practices, hospitals and schools.
The causes of anxiety attacks are not well understood. Some traumatic life events can set off anxiety attacks if the person is prone to depression or anxiety disorders. Also, medical conditions and some medications may trigger anxiety attacks. Many believe anxiety attacks run in families with a genetic predisposition. In other words, if your mom and her sister had anxiety attacks, it’s likely you will, too.

^ Leicht, Gregor; Mulert, Christoph; Eser, Daniela; Sämann, Philipp G.; Ertl, Matthias; Laenger, Anna; Karch, Susanne; Pogarell, Oliver; Meindl, Thomas; Czisch, Michael; Rupprecht, Rainer (2013). "Benzodiazepines Counteract Rostral Anterior Cingulate Cortex Activation Induced by Cholecystokinin-Tetrapeptide in Humans". Biological Psychiatry. 73 (4): 337–44. doi:10.1016/j.biopsych.2012.09.004. PMID 23059050.
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.
Please note that it is not a good idea to attempt to diagnose or label a friend or family member. Only a mental health professional can diagnose an anxiety disorder, as many disorders have overlapping features, and can go together with other types of mental health difficulties. However, if you notice signs of anxiety, or just feel that something is not quite right with someone that you care about, it's a good idea to reach out to ask the person how they are feeling. You could start with something neutral and supportive like, "It seems like you haven't been quite yourself lately. Is there something going on that you want to talk about?"

Cognitive Behavioral Therapy (CBT) is an example of one type of psychotherapy that can help people with anxiety disorders. It teaches people different ways of thinking, behaving, and reacting to anxiety-producing and fearful objects and situations. CBT can also help people learn and practice social skills, which is vital for treating social anxiety disorder.
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