Table 2.

Anxiety disorder domains and definitions

Definition
Generalised anxiety disorder*	Generalised and persistent anxiety but not restricted to, or strongly predominating in, any specific circumstances
Panic/agoraphobia*	Panic: recurrent attacks of severe anxiety Agoraphobia: a well-defined cluster of phobias embracing various fears such as leaving home, entering shops, public places and crowds, or travelling alone via buses, trains or planes
Social phobia*	Fear of scrutiny by other individuals resulting in avoidance of social situations
Separation anxiety disorder*	Fear of separation constitutes the main focus of the anxiety
Obsessive compulsive disorder*	The essential feature is recurrent obsessional thoughts or compulsive acts
Physical injury fears	A type of specific phobia in which the fear is driven by irrational worrying about experiencing physical harm or injury

^*Definitions based on International Statistical Classification of Diseases and Related Health problems 10^th revision (World Health Organisation 2015)