Final answer:
Anxiety disorders are characterized by persistent and excessive fear and worry, along with behavioral disturbances, and include conditions such as OCD, panic disorders, and PTSD.
Step-by-step explanation:
Disorders characterized by excessive, persistent fear and worry that is accompanied by disturbances in behaviors are known as anxiety disorders. These include a range of conditions such as obsessive-compulsive disorder (OCD), panic disorders, posttraumatic stress disorder (PTSD), and both social and specific phobias. It is important to differentiate between normal feelings of anxiety and an anxiety disorder, which involves worry and fearfulness lasting for months and can significantly interfere with a person's daily activities.