[Dengue fever with hemorrhagic manifestations after a stay in Thailand]

On returning from a 24-day long stay in Thailand a 30-year-old German woman fell ill with high fever and head and limb aches. Soon after a confluent petechial exanthem was noted, as well as conjunctival and gastrointestinal bleedings. Biochemical findings (fall in haemoglobin concentration and haematocrit, leucopenia and thrombocytopenia, rise in lactate dehydrogenase) and a rise in Dengue antibody titre to 1 : 320 (on the 13th day of illness) confirmed the diagnosis of Dengue fever with haemorrhagic manifestations. This mosquito-transmitted viral disease, while so far only rarely reported in tourists, should be considered in the differential diagnosis of fever of undetermined origin in travellers to the tropics.