<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 such as restlessness, fatigue, irritability and difficulty concentrating. Common anxiety disorders include generalized anxiety disorder (GAD), panic disorder, social phobia, specific phobias, post-traumatic stress disorder (PTSD) and obsessive-compulsive disorder (OCD).