Anxiety is the presence of heightened anxiousness and stress during certain situations, or sometimes for no apparent reason at all. It is typically qualified as a mental or psychological disorder, though it does have physiological causes and visible physiological symptoms, too. However, it is typically a mentally-based issue that people deal with during highly stressful situations, or when they feel particularly boxed in or trapped.
A person suffer from anxiety in different ways and with different stressors around the world, so it makes it somewhat difficult for psychologists to pin down specific symptoms, causes, signs and more in anxiety. However, there are certain facts that are known, such as those who suffer from anxiety sometimes also suffer from paranoia or conspiracy theory-like issues, and those suffering from anxiety feel as though they are unable to cope with whatever may be in their lives.
A very, very wide range of problems and issues causes anxiety, but very generally speaking, it happens when someone feels stressed and trapped in a situation in which they cannot leave. Then, they get anxious and show symptoms of anxiety as they become agitated and stressed out over the issue or problem.
For many, anxiety can be caused by something seemingly simple, like being present in a large group of people, or being alone in an elevator or in an otherwise confined area. Still for other people, anxiety may come from being apart from a loved one, or being around or near a person they do not enjoy. Anxiety for others can involve their careers, financial lives, or any other issues that may provide stress and problems within their daily lives.
Just like the causes of anxiety, the symptoms of the disorder can range far and wide, but there are certain things that most all people who feel anxiety experience. These include physiological reactions like sweaty palms, a sweaty forehead, an increased heartbeat, a headache, body chills, and other physiological reactions that occur when stress is presented into a situation.
Other symptoms can be less physiological but more psychological, like the desire to curl up in a ball alone, a desire to flee the situation and need to leave the room or area, or a desire to avoid people or things to avoid become more stressed out and anxious. Anxiety can be a very difficult disorder to pin down, since the causes and symptoms vary so widely and different psychologists are likely to interpret different causes and symptoms in such different ways.