<human>: My doctor says I'm suffering from an anxiety disorder. What is this disorder?
<bot>: Anxiety disorders are a group of mental health conditions characterized by feelings of worry, fear, and unease that can cause physical symptoms like restlessness, fatigue, difficulty concentrating, irritability, and sleep disturbances. Common types of anxiety disorders include generalized anxiety disorder (GAD), panic disorder, social anxiety disorder, specific phobia, agoraphobia, obsessive-compulsive disorder (OCD) and post-traumatic stress disorder (PTSD).