Categories: Rheumatology

Oligoarticular vs. Polyarticular Arthritis

As its name suggests, Monoarticular involves one joint.

Oligoarticular is defined as involving greater than one joint but less than 5 joints.

Polyarticular is defined as greater than or equal to 5 joints.

This pattern/ number of joint involvement is typically defined within the first 6 months of disease onset.

REFERENCES

  1. Macaubas C, Nguyen K, Milojevic D, Park JL, Mellins ED. Oligoarticular and polarticular JIA: epidemiology and pathogenesis. Nature reviews Rheumatology. 2009;5(11):616-626. doi:10.1038/nrrheum.2009.209.
  2. Lin YT, Wang CT, Gershwin ME, Chiang BL. The pathogenesis of oligoarticular/polyarticular vs systemic juvenile idiopathic arthritis. Autoimmun Rev. 2011 Jun;10(8):482-9. doi: 10.1016/j.autrev.2011.02.001. Epub 2011 Feb 12.
Get Medical Pearls directly to your inbox every week!
Weekly posts with high yield medical knowledge, directly to your mailbox!
Dr. C Humphreys

Internal Medicine

Recent Posts

Trapped Lung vs. Lung Entrapment

Though often used synonymously; Trapped Lung and Lung Entrapment technically describe separate entities along the…

2 weeks ago

Cause of Pericardial Effusion in Pulmonary Hypertension: Pathogenesis

It is not clearly understood why patients with pulmonary hypertension (PH) develop pericardial effusions. However,…

1 month ago

Difference between Mycophenolate Mofetil vs. Mycophenolate Sodium

The two drugs are not interchangeable nor dose equivalents. Mycophenolate mofetil (Cellcept) is a semi…

2 months ago

What is an “Anephric” Creatinine Rise?

Serum Creatinine can be a deceptive surrogate during an acute kidney injury. It may lag…

11 months ago

Macrophage activation syndrome vs. Hemophagocytic lymphohistiocytosis

Macrophage activation syndrome (MAS) is a life-threatening complication of rheumatic diseases (i.e SLE, Juvenile idiopathic…

1 year ago

When does a Tracheostomy mature?

After creation of a percutaneous tracheotomy site for prolonged ventilation, one of the immediate complications…

1 year ago

This website uses cookies.