Panic attacks involve sudden feelings of terror that strike without warning. These episodes can occur at any time, even during sleep. People experiencing a panic attack may believe they are having a heart attack or they are dying or going crazy. The fear and terror that a person experiences during a panic attack are not in proportion to the true situation and may be unrelated to what is happening around them. Most people with panic attacks experience several of the following symptoms:

Anxiety attack disorder generally starts with one unexplained attack that can include a number of intense anxiety attack symptoms, which causes the individual to become concerned. As other attacks occur, fear of having anxiety attacks, what they mean, what the associated symptoms mean, and where the attacks and symptoms may lead, increases. This escalation of fear is often the catalyst that brings on the attacks, causing the individual to be seemingly caught in a cycle of fear then panic, then more fear, then more panic, and so on.
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.[88] Temperament (e.g., neuroticism)[45] and attitudes (e.g. pessimism) have been found to be risk factors for anxiety.[86][89]
Cognitive therapy and exposure therapy are two CBT methods that are often used, together or by themselves, to treat social anxiety disorder. Cognitive therapy focuses on identifying, challenging, and then neutralizing unhelpful or distorted thoughts underlying anxiety disorders. Exposure therapy focuses on confronting the fears underlying an anxiety disorder to help people engage in activities they have been avoiding. Exposure therapy is sometimes used along with relaxation exercises and/or imagery.
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.
The symptoms of a panic attack may cause the person to feel that their body is failing. The symptoms can be understood as follows. First, there is frequently the sudden onset of fear with little provoking stimulus. This leads to a release of adrenaline (epinephrine) which brings about the fight-or-flight response when the body prepares for strenuous physical activity. This leads to an increased heart rate (tachycardia), rapid breathing (hyperventilation) which may be perceived as shortness of breath (dyspnea), and sweating. Because strenuous activity rarely ensues, the hyperventilation leads to a drop in carbon dioxide levels in the lungs and then in the blood. This leads to shifts in blood pH (respiratory alkalosis or hypocapnia), causing compensatory metabolic acidosis activating chemosensing mechanisms which translate this pH shift into autonomic and respiratory responses.[25][26] The person him/herself may overlook the hyperventilation, having become preoccupied with the associated somatic symptoms.[27]
A collection of activities focused in which an individual consciously produces the relaxation response in their body. This response consists of slower breathing, resulting in lower blood pressure and overall feeling of well-being. These activities include: progressive relaxation, guided imagery, biofeedback, and self-hypnosis and deep-breathing exercises.
To activate your parasympathetic nervous system, use this simple meditation technique: focus your gaze on an imaginary point in front of you; relax your focus and use your peripheral vision, as if you are trying to take in everything around you with soft focus. It signals to your brain to relax. The more you practice this technique – the faster it will help you to relax in any situation.
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.[1] It is the subjectively unpleasant feelings of dread over anticipated events, such as the feeling of imminent death.[2][need quotation to verify] Anxiety is not the same as fear, which is a response to a real or perceived immediate threat,[3] whereas anxiety involves the expectation of future threat.[3] 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.[4] It is often accompanied by muscular tension,[3] restlessness, fatigue and problems in concentration. Anxiety can be appropriate, but when experienced regularly the individual may suffer from an anxiety disorder.[3]
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.