Progressive disseminated histoplasmosis is an infection caused by Histoplasma capsulatum, and most people who develop this severe form of histoplasmosis are immunocompromised or taking systemic corticosteroids.:316 Skin lesions are present in approximately 6% of patients with dissemination.:316 Progressive disseminated histoplasmosis is an infection caused by Histoplasma capsulatum, and most people who develop this severe form of histoplasmosis are immunocompromised or taking systemic corticosteroids.:316 Skin lesions are present in approximately 6% of patients with dissemination.:316