Although the symptoms of anxiety can differ, based on the specific anxiety disorder a person has, all anxiety disorders are linked together by common symptoms that include excessive, irrational fear and dread. Also, regardless of the type of disorder, the anxiety a person feels is generally chronic, unremitting, and can grow progressively worse. Some of the most common anxiety disorders include obsessive-compulsive disorder, post-traumatic stress disorder, and panic disorders. Fortunately, there are several treatment options available, such as medications, psychotherapy, or a combination of both.