Generalized anxiety disorder involves persistent and excessive worry that interferes with daily activities. This ongoing worry and tension may be accompanied by physical symptoms, such as restlessness, feeling on edge or easily fatigued, difficulty concentrating, muscle tension or problems sleeping. Often the worries focus on everyday things such as job responsibilities, family health or minor matters such as chores, car repairs, or appointments.

A person with social anxiety disorder has significant anxiety and discomfort about being embarrassed, humiliated, rejected or looked down on in social interactions. People with this disorder will try to avoid the situation or endure it with great anxiety. The fear or anxiety causes problems with daily functioning and lasts at least six months.

Panic Disorder is characterized by recurrent, unexpected panic attacks - intense episodes of fear accompanied by physical symptoms such as rapid heartbeat, sweating, trembling, shortness of breath, and chest pain. These attacks can be so severe that individuals may mistake them for life-threatening medical emergencies.

A specific phobia is excessive and persistent fear of a specific object, situation or activity that is generally not harmful. Patients know their fear is excessive, but they can't overcome it. These fears cause such distress that some people go to extreme lengths to avoid what they fear. Examples are public speaking, fear of flying or fear of spiders.

Agoraphobia is the fear of being in situations where escape may be difficult or embarrassing, or help might not be available in the event of panic symptoms. The fear is out of proportion to the actual situation and lasts generally six months or more and causes problems in functioning.

A person with separation anxiety disorder is excessively fearful or anxious about separation from those with whom he or she is attached. The feeling is beyond what is appropriate for the person's age, persists at least 6 months in adults, and causes problems functioning.