The aim was to highlight the role of childcare products as causes for mild brain injury (concussion) in small children (0-4 years of age) and to determine the most dangerous products. By childcare products this report means the following items: child and baby furniture, nursing tables, baby walkers, toys, baby carriages, sport equipment for children, playground equipment and security equipment for children. The data were derived from the EHLASS (European Home and Leisure Accident Surveillance System) for 1998 and 1999 and covered a restricted population of Sweden (approximately 5 per cent). According to this register 182 mild brain injuries (concussions) were recorded following a fall, an accident or a blow to the head among children (0-4 years of age) during 1998 and 158 for 1999. Of those injuries, childcare products were the cause of the accident in 84 (46 per cent) and 76 (48 per cent) cases respectively for 1998 and 1999. The number of children admitted for hospital care was 68 (57/84) and 74 (56/76) per cent respectively. The home was the most common place of the accident and play and leisure activity were the most common activities. More than 50 per cent of these accidents took place during daytime. The product type that caused most accidents was nursery furniture and, in this category, the baby walker was the most dangerous. The product type that caused the second most frequent accidents was playground equipment.