oligoarticular
Pronunciation: oh-li-go-ar-TIK-you-lar
Affecting four or fewer joints during the first six months of disease, a key subtype classification in pediatric arthritis.
Full Definition
Oligoarticular refers to a specific pattern of joint involvement in juvenile idiopathic arthritis where four or fewer joints are affected during the initial six months of disease onset. This subtype is further subdivided into persistent oligoarticular (remaining ≤4 joints) and extended oligoarticular (progressing to >4 joints after six months). The oligoarticular subtype is the most common form of JIA and carries different prognostic implications and treatment approaches compared to polyarticular disease.
Usage
Usage note: Always use in conjunction with specific joint count criteria when documenting subtype classification.
In Context
- "The oligoarticular subtype typically affects large joints and has a better long-term prognosis." — Medical textbook
- "Patients with oligoarticular JIA require regular ophthalmologic screening for chronic anterior uveitis." — Clinical guideline