Two cases affected with Takayashu arteritis are presented. The adult probanda born in 1960 after genetic counselling and appropriate prenatal care had a healthy liveborn boy. Her previous six pregnancies were terminated on the basis of forced medical reason. The infant probanda died at the age of 4 months with the features of sudden infant death syndrome (SIDS). Pathohistological examination detected her Takayashu arteritis. It seems to be the youngest published case in the international literature and Takayashu arteritis may be the rare cause of SIDS.