Anxiety can come in many forms:
Generalized Anxiety Disorder (GAD): feeling anxiety and worry for long periods of time about nonspecific life events, objects, and situations, such as your health, money, family, work, or school. Controlling these worrying thoughts is difficult and interferes with daily functions like work, school, social activities, and relationships because sufferers expect failure and disaster.
Panic Disorder: a type of anxiety when you feel brief or sudden attacks of intense fear. They can occur unexpectedly and last for several minutes or hours. A panic attack may lead you to recognise changes in your normal bodily functions (such as shortness of break, shaking, nausea and dizziness) which you may interpret as life threatening. Sometimes these panic attacks may cause you to worry about future attacks, and therefore causing you to make drastic behavioural changes in order to avoid these attacks.
Phobia: an irrational fear and avoidance of an object or situation (for example, crowds, animals, or everyday objects).
Social Anxiety Disorder: A type of social phobia where you fear being negatively judged by others or fear public embarrassment due to impulsive actions. Some feelings may include stage fright, a fear of intimacy, or a fear of humiliation. This disorder can cause people to avoid public situations and human contact to the point that daily life is severely impacted.
Obsessive-Compulsive Disorder (OCD): where irrational thoughts or actions are repetitive, distressing, and intrusive, but are exorcised anyway to alleviate an anxiety. For example, sufferers may obsessively clean personal items or hands or constantly check locks, stoves, or light switches because not doing so causes extreme anxiety and worry.
Post-traumatic Stress Disorder (PTSD): anxiety that results from a previous trauma (for example, rape or a serious accident). PTSD often leads to flashbacks and behavioral changes in order to avoid certain situations, people or objects.
Separation Anxiety Disorder: feeling high levels of anxiety when separated from a person or place which regularly provides feelings of security or safety. Sometimes separation results in panic, and is considered a disorder when the response is extreme or inappropriate.