Eight weeks after his return from Mauritius, a 2.5-year-old boy started to show signs of gastrointestinal illness including diarrhoea with frequent ill-smelling stools as well as restlessness, insomnia and apathy. Proglottids excreted with the faeces were diagnosed as Raillietina madagascariensis (Davain, 1870), the tropical rat tapeworm. Treatment with praziquantel (10 mg/kg BW) proved to be efficient.