Mucocutaneous leishmaniasis involves which tissues?

Mucocutaneous leishmaniasis involves which tissues?

• A. Visceral organs
• B. Mucous membranes and skin
• C. Brain and spinal cord
• D. Lymph nodes

Answer: (B)

Understanding mucocutaneous leishmaniasis hinges on which tissues the parasite tends to invade. This form primarily affects the skin and the mucosal surfaces, especially the mucous membranes of the nose, mouth, and pharynx. The disease often starts with a skin lesion and then extends to involve mucosal tissue, leading to ulceration and destructive changes in these membranes. That combination of skin plus mucous membranes is what gives the name “mucocutaneous.” In contrast, visceral leishmaniasis targets internal organs such as the spleen, liver, and bone marrow, so those tissues—not the mucous membranes or skin—are involved in that form. Brain or spinal cord involvement isn’t a defining feature here, and while lymph nodes can be affected in various infections, they’re not the primary tissues implicated in mucocutaneous disease.

Understanding mucocutaneous leishmaniasis hinges on which tissues the parasite tends to invade. This form primarily affects the skin and the mucosal surfaces, especially the mucous membranes of the nose, mouth, and pharynx. The disease often starts with a skin lesion and then extends to involve mucosal tissue, leading to ulceration and destructive changes in these membranes. That combination of skin plus mucous membranes is what gives the name “mucocutaneous.”

In contrast, visceral leishmaniasis targets internal organs such as the spleen, liver, and bone marrow, so those tissues—not the mucous membranes or skin—are involved in that form. Brain or spinal cord involvement isn’t a defining feature here, and while lymph nodes can be affected in various infections, they’re not the primary tissues implicated in mucocutaneous disease.