Scrub Typhus Presenting As Acute Febrile Illness With Splenic Infarct: A Rare Manifestation

Scrub typhus is a mite-borne infectious disease endemic in India, Korea, China, Japan, Taiwan, Pakistan, Malaysia, Thailand, and Australia. It has a multitude of clinical manifestations ranging from mild symptoms like headache, myalgia, anorexia, fever, and rash to severe multiorgan failure. It can also lead to several complications, including pancreatitis, hepatitis, myocardial infarction, and cerebral infarction. A few cases of splenic infarction are also reported. We report a rare case of a 40-year-old female presenting with fever and left upper quadrant abdominal pain of acute onset. She is diagnosed serologically with scrub typhus using enzyme-linked immunosorbent assay (ELISA) after ruling out other infectious causes, including other tropical diseases. Abdominal computed tomography revealed splenic infarction attributed to scrub typhus after excluding other etiologies. She improved after a course of doxycycline and was advised to follow up. Hence, a splenic infarct should be suspected in a patient with scrub typhus complaining of acute left hypochondriac pain.