Dengue haemorrhagic fever complicated with spontaneous psoas haematoma requiring blood products

Dengue is a mosquito borne febrile viral disease .Sri Lanka is an endemic area where the incidence was peak in 2017 and slightly decreased in 2020 (28.7%) because of preventive measures. Presentation can be asymptomatic or cause a spectrum of symptoms including undifferentiated viral fever, dengue fever, dengue haemorrhagic fever with or without shock and expanded dengue syndrome. We describe here a case of 48-years old man who presented to the emergency unit with three-day history of acute fever and prodromal features, subsequently diagnosed to have dengue haemorrhagic fever and it was complicated with psoas haemorrhage. Only limited cases were reported about spontaneous psoas muscle haemorrhage in dengue haemorrhagic fever in adult population.