Histoplasmosis is caused by Histoplasma capsulatum. Like most fungal infections, histoplasmosis is common in immunocompromised patients. In immunocompetent patient, infection is generally asymptomatic and rarely turns into a disseminated form. Addisonian crisis as presentation of disseminated form has been reported in present. Here, we report a case of disseminated histoplasmosis leading to life threatening adrenal crisis and hypercalcemia in an elderly immunocompetent Indian patient. Appropriate diagnosis and anti fungal and steroid treatment lead to dramatic improvement in patient. Histoplasmosis should be considered in a immunocompetent hosts with adrenal involvement.