A case of multiple neonatal haemangiomatosis is reported. The disease entity is rare and probably always combined with haemangiomas of internal organs. When visceral involvement provokes clinical symptoms (cardiac, cerebral, gastrointestinal), the spontaneous course often proves fatal. The prognosis seems to improve substantially if treatment with systemic corticosteroids is instituted. The patient reported, who had concomitant cardiac and gastrointestinal symptoms, recovered completely following corticosteroid treatment. It is concluded that steroid treatment is indicated without hazards in complicated cases of multiple neonatal haemangiomatosis.