There are three types of anxiety disorders. These are:
1. Generalized anxiety disorder
Generalized anxiety disorder is characterized by excessive worrying about things both real and imagined, such as the possibility of losing one’s job even if that is not on the horizon, or the possibility of a child, spouse or loved one falling ill even though there is no current medical condition.
2. Panic disorder
Panic disorder is characterized by racing heart, sweaty palms, chills, dizziness. Panic attacks can be triggered by the same things or can be triggered by random events or situations, such as getting lost while driving.
3. Social anxiety
Social anxiety is characterized by a debilitating fear of what people will think about you and how your interactions with others or your interactions in public will go. This can cause other issues, offshoots of this anxiety.
Other anxiety disorders are obsessive–compulsive disorder, phobias and separation disorder.
https://www.empowher.com/anxiety/content/what-anxiety