Chromoblastomycosis on Darker Skin: Epidemiology and Etiology

00:00 Welcome to our lecture on deep fungal infections.

00:06 Deep fungal infections are defined as chronic deep fungal infections of the skin and subcutaneous tissue. The list of deep fungal infections includes chromoblastomycosis, mycetoma, cryptococcosis, histoplasmosis, and lastly, sporotrichosis. So we're going to try and cover these conditions in our lecture.

00:32 Starting with chromoblastomycosis.

00:35 It is caused by traumatic inoculation of a specific group of dematiaceous fungi.

00:43 It's caused by various fungi in various geographic locations.

00:47 As you can see on the screen here, different organisms in different countries cause chromomycosis . In humid locations such as Latin America and Asia, you also have Farsetia compacta, causing chroma mycosis.

01:14 It starts as a small, firm red gray bump that grows slowly to about two millimeters per year.

01:22 One may have satellite lesions which develop around the initial lesion.

01:28 Eventually, a warty dry nodule or plaques develop on the affected area.

01:37 Swelling and over time the development of elephantiasis may occur in the affected limb.

01:43 Due to the obstruction of lymphatic vessels.