Some general categories into which anxiety disorders have been classified are:
General Anxiety Disorders (GAD):
People with GAD experience exaggerated and excessive fear and worry about an imagined circumstance. They end up expecting the worst, even though there is no reason to, during normal day to day situations. Anticipating disasters relating to money, health, relationships, etc becomes something they have to live with on a daily basis.
Panic Disorders & Agoraphobia:
Panic disorders are different from anxiety disorders in that it is not a constant worry but a situational fear, where the person suffering is gripped by intense terror, triggered in a particular situation. The situations would depend from person to person. In these situations, the affected people show bodily symptoms of trembling, shaking, confusion, dizziness, nausea, breathing problems. During these panic attacks, the patient might even need medical attention or hospitalization.
Post Traumatic Stress Disorder (PTSD):
As the name suggests, this type of disorder develops after a person has experienced a traumatic event sometime in the near or distant past. The trauma could have been a physical or emotional abuse, a situation of physical or emotional violence, threat to one’s life, victims of crime or sexual assault, “survivor’s guilt”, bullying. Symptoms include flashbacks to the traumatic event, sleep troubles, depression, intense guilt, a loss of interest in activities that they used to enjoy, respiratory problems, etc.
Social Anxiety Disorder:
This is the fear of engaging and interacting with people in a social setting. That may be at work, with family members or colleagues, or even with friends. People afflicted with this are shy, withdrawn and nervous. They are likely to feel intense feelings of embarrassment, self-consciousness in front of other people, nausea, etc. Typical fears include being made fun of, being teased or criticized, fear of speaking in front of a group of people, fear of being judged by other people, fear of rejection, etc. ‘Social phobias’ are also sometimes connected to performance issues.
These are severe symptoms of anxiety triggered by a very specific situation or stimuli. The stimuli can be a thing, an animal, a location or something similar. Examples are fear of heights, small confined places, needles, injection, etc.
These are some of the more common categories of anxiety disorder. If someone is suffering from one or more of these disorders, their treatment would need to be tailored accordingly, after adequately exploring the causes of these symptoms.