Adult onset Still's disease occurring during pregnancy: Case-report and literature review.

INTRODUCTION: Adult onset Still's disease is a rare affection classified among non-hereditary autoinflammatory diseases. We here report a case of AOSD revealed during pregnancy with a life-threatening presentation along with a review of 19 cases from literature. CASE: A 38-years old woman was treated in our department for diffuse systemic sclerosis and associated Sjögren syndrome. She was pregnant and presented with acute fever and arthralgias. Laboratory data revealed mild liver cytolysis but a large screening for infectious and auto-immune diseases was negative and hepato-biliar imaging was normal. Ferritin levels were at 41 000 ng/mL with glycosylated ferritin less than 5%. The diagnosis of AOSD was stated and because of persistent fever and polyarthralgias, after exclusion of active infection, steroids were started (prednisone 1 mg/kg) associated with colchicine, which allowed clinical remission and C-reactive protein significant decrease. CONCLUSION: Pregnancy-revealed AOSD appears to be a specifical subset of the disease with a systemic course, flares on first and second trimester, obstetrical complications such as prematurity and IUGR sometimes leading to life-threatening situations requiring parenteral corticotherapy and intravenous immunoglobulins.