A complex case of disseminated histoplasmosis triggering hemophagocytic lymphohistiocytosis in a patient with lupus.

Disseminated histoplasmosis is a rare yet serious fungal infection that primarily affects individuals with compromised immune systems. While it is widely known for its endemicity in the Midwest region of the USA, recent studies have indicated a noteworthy increase in sporadic cases, suggesting a widening of the endemic region for the pathology. This report describes a case of disseminated histoplasmosis in a 39-year-old female with a history of lupus, hypertension, anxiety, asthma, idiopathic edema, and fibromyalgia from a nonendemic region, who presented with cyclic fevers of unknown origin, peripheral edema, and oral sores.