[An asymptomatic mother of cutaneous neonatal lupus child was diagnosed with Sjögren's syndrome suspected].

We report an asymptomatic mother of a cutaneous neonatal lupus child was diagnosed with Sjögren's syndrome suspected after parturition. A 30-year old woman was visited our hospital to evaluated autoimmune disease because her baby was diagnosed as cutaneous neonatal lupus. Both gum test and Schirmer's test were positive. Antinuclear antibody, anti-SS-A and anti-SS-B antibody were positive. Serum IgG was elevated (2918 mg/dl). Finally, this case was suspected as Sjögren's syndrome. Continuoues follow-up of asymptomatic mothers of a neonatal lupus child is warranted.