Assertion: psoriasis's onset | /r/HasProperty | gradual
Facets:
value: usually
type: DEGREE
value: with mild symptoms
type: OTHER
Source sentences:
text: Onset may be gradual with mild symptoms developing slowly over a period of years, or progress more rapidly to become severe and destructive.
text: The onset of psoriasis is usually gradual but occasionally explosive.
text: In about 75 per cent of patients the onset of rheumatoid arthritis is gradual, with only mild symptoms at the beginning.