Undifferentiated arthritis (UA) is a diagnosis of exclusion made in patients with inflammatory arthritis who have at least one clinically swollen joint, in the absence of further findings on a thorough evaluation that allow for making a diagnosis of another specific rheumatologic disease.
 
A complaint of arthralgia in the absence of a swollen joint on examination or findings such as pain on motion or tenderness upon pressure is not sufficient to make a diagnosis of UA.

 

 

Patients with UA require effective treatment to begin to alleviate symptoms and to alleviate and prevent the functional impairment associated with active disease.

 

 

 

 

Content 12

Content 9

 

History

 
 
 
 

 

Physical Exam

 

Laboratory Tests

X-ray

 

Essentail Criteria to Establish Diagnosis

 

 

Content 4

Content 3

Content 11

 

 

USMLE Reviewer (Subscription Required)