Assertion: insomnia's stress | /r/HasProperty | enough to perpetuate the insomnia
Facets:
value: in itself
type: OTHER
value: in a kind of vicious circle
type: OTHER
Source sentences:
text: Stress and anxiety about difficulties in sleeping may in itself be enough to perpetuate the insomnia, in a kind of vicious circle (sometimes referred to as conditioned insomnia).