Adult-onset Still’s disease and pregnancy: about ten cases and review of the literature

Little is known about the interactions between adult-onset Still’s disease (AOSD) and pregnancy. In an attempt to clarify the link between these 2 conditions, we retrospectively analyzed patients registered as suffering from AOSD seen in our university hospital. A total of 57 patients, among them 30 women, were diagnosed. Ten pregnancies in 8 women were identified. Three cases manifested AOSD in their first trimester, all treated with prednisone. Premature births and flares occurred in 2 patients. One patient developed a monocyclic AOSD during her second pregnancy’s postpartum. In the 4 other cases, AOSD was known and quiescent before pregnancy. One patient had 2 pregnancies without any flare or complication. One patient experienced her first pregnancy while under treatment and presented a late flare 8 months after delivery. The third patient developed exacerbation in the first trimester of her second pregnancy which was treated with IgIV alone. The last one presented her first pregnancy 7 years after diagnosis. A prednisone-treated systemic flare occurred during the first trimester without later complication. Based on our own experience and the analysis of only two series of the literature, including, respectively, 4 and 5 patients, we suggest that two settings could be distinguished. First, AOSD can occur during pregnancy and can be responsible for obstetrical complications. Then, in patients with known AOSD, the second trimester and postpartum appear to be periods exposing to disease recurrence. Thus, we recommend a close multidisciplinary monitoring by a rheumatologist and an obstetrician prior to, during and after pregnancies.