[Gianotti-Crosti syndrome in an infant following immunization].

Gianotti-Crosti syndrome (GCS), first described by F. Gianotti in 1955, was originally reported to be associated with hepatitis B virus infection in children. The typical clinical picture allows diagnosis of GCS at first glance. The pathogenesis is still unknown. Besides HBV infection, a large number of infectious agents, mostly viruses, have been described as a trigger of GCS. Here we report the occurrence of GCS in an infant five days after the fourth immunization against poliomyelitis, DTPa, Hib, hepatitis B and Streptococcus pneumoniae. Our data and review of the literature suggest that GCS is rarely associated with immunizations, especially when performed with inactivated vaccines.