Primary Sjögren syndrome: report of a 10 years old girl with local edema and positivity of anti SS-A and anti SS-B autoantibodies.

Sjogren-Larsson syndrome (SLS) is an autoimmune disease, uncommon in childhood. We report a case of SLS in a 10-year-old girl with a history of tumor, calor and rubor in the back of her toes almost every month, which resolved in 4-5 days without therapy. She did not complain of dry mouth or dry eyes. The laboratory findings showed high inflammation markers, rheumatoid factor 128 IU, Waaler-Rose 256 IU, anti nuclear antibody (ANA) 1/640, SSA (anti Sjogren antigen A) and SSB (anti Sjogren antigen B) positive and hypergammaglobulinemia. The Schirmer's test resulted to be pathologic, the ultrasonography images and biopsy of minor salivary glands revealed focal periductal lymphocytic infiltrate and sialoduct ectasia class IV of juvenile Sjogren syndrome. The juvenile Sjogren syndrome is frequently under-diagnosed. Clinical manifestations in children might be different from the adult form, although laboratory findings may be similar to those found in adults.