Which presentation is associated with L. major, L. mexicana, and L. amazonensis?

Which presentation is associated with L. major, L. mexicana, and L. amazonensis?

• A. Visceral
• B. Cutaneous
• C. Mucocutaneous
• D. Diffuse

Answer: (B)

Leishmania major, L. mexicana, and L. amazonensis are classic causes of cutaneous leishmaniasis. Infections with these species typically produce localized skin ulcers at the site of the sandfly bite, with raised, indurated borders that may heal slowly over months. This stands in contrast to visceral leishmaniasis, which involves internal organs like the spleen and liver and causes systemic symptoms, and mucocutaneous leishmaniasis, which affects mucous membranes of the nose, mouth, and throat. While L. amazonensis can occasionally lead to more widespread or unusual skin presentations, the standard presentation for these species is a cutaneous lesion at the bite site.

Leishmania major, L. mexicana, and L. amazonensis are classic causes of cutaneous leishmaniasis. Infections with these species typically produce localized skin ulcers at the site of the sandfly bite, with raised, indurated borders that may heal slowly over months. This stands in contrast to visceral leishmaniasis, which involves internal organs like the spleen and liver and causes systemic symptoms, and mucocutaneous leishmaniasis, which affects mucous membranes of the nose, mouth, and throat. While L. amazonensis can occasionally lead to more widespread or unusual skin presentations, the standard presentation for these species is a cutaneous lesion at the bite site.