Assertion: lupus's disease | /r/Causes | stiffness
Facets:
value: in the hands
type: LOCATION
value: in ankles
type: LOCATION
value: in wrists
type: LOCATION
Source sentences:
text: Sometimes lupus is mistaken for rheumatoid arthritis (RA) because both diseases can cause joint pain and stiffness, often in the hands, wrists, and ankles.