Assertion: brain fog | /r/CapableOf | occur out of the blue
Facets:
value: for no apparent reason
type: CAUSE
value: out of the blue’
type: OTHER
Source sentences:
text: Brain fog, foggy head can precede, accompany, or follow an episode of nervousness, anxiety, fear, and elevated stress, or occur ‘out of the blue’ and for no apparent reason.