Cutis marmorata telangiectatica congenita and neonatal lupus.

Cutis marmorata telangiectatica congenita is an uncommon congenital vascular anomaly that is characterized by persistent, reticulated, violaceous pigmentation. We describe a female infant with vascular lesions consistent with this entity who was born to a mother with previously diagnosed systemic lupus erythematosus. Antinuclear antibodies and anti-Ro/SSA antibodies were detected in both mother and infant, supporting a diagnosis of neonatal lupus. This presentation is consistent with the rarely reported association between neonatal lupus and cutis marmorata telangiectatica congenita that suggests the latter is part of the cutaneous spectrum of the former. A thorough maternal history and laboratory investigations should be considered for infants with cutis marmorata telangiectatica congenita and their mothers in order to rule out the presence of an underlying autoimmune disease.