Panic disorder involves repeated episodes of sudden feelings of intense anxiety and fear or terror that reach a peak within minutes (panic attacks). You may have feelings of impending doom, shortness of breath, chest pain, or a rapid, fluttering or pounding heart (heart palpitations). These panic attacks may lead to worrying about them happening again or avoiding situations in which they've occurred.
Panic disorder typically develops in late adolescence or early adulthood, but can occasionally begin in childhood or late adulthood. Research has found strong familial links, suggesting that having a close biological family member with panic disorder puts someone at greater risk for developing this condition. Panic disorder is almost twice as prevalent in women than men. The causes of panic disorder aren't currently known. Different theories examine the influence of environmental, biological, and psychological influences. Most experts agree that panic disorder is the result of a combination of these factors.
Simply put - agoraphobia means that you avoid a lot of ordinary activities and situations for fear of having panic attacks. To most people who get this diagnosis, the term sounds pretty scary, but that's all it means. It does not mean you are or will become house bound. That can happen to people, and is an extremely severe case of agoraphobia, but the great majority of people with agoraphobia do not experience it to that extent.
Anxiety can be either a short-term 'state' or a long-term personality "trait". Trait anxiety reflects a stable tendency across the lifespan of responding with acute, state anxiety in the anticipation of threatening situations (whether they are actually deemed threatening or not).[44] A meta-analysis showed that a high level of neuroticism is a risk factor for development of anxiety symptoms and disorders.[45] Such anxiety may be conscious or unconscious.[46]
The degree of accompanying stress response and its physiological, psychological, and emotional changes are directly proportional to the degree of anxiety. For example, if you are only slightly concerned, such as being slightly nervous about meeting someone new, the body produces a small degree stress response. The small degree stress response can be so slight that you don’t even notice it.