“ I thank You God for most this amazing day: for the leaping greenly spirits of trees and a blue true dream of sky; and for everything which is natural which is infinite which is yes. ” - E E Cummings

Other anxiety disorders include Anxiety Disorders due to a General Medical Condition (where the anxiety is a direct physiological consequence of a general medical condition), Substance-Induced Anxiety Disorder (where the anxiety is directly caused by the physiological effects of a substance - drug of abuse or medication - including prescription use, poisoning, intoxication, or withdrawal), and Anxiety Disorder Not Otherwise Specified (where there is prominent clinically significant anxiety or phobic avoidance that doesn't meet the diagnostic criteria for any other anxiety or adjustment disorder).

Health anxiety disorder and hypochondriasis are typically classified under Somatoform disorders.