Final answer:
Cutaneous leishmaniasis is the most common form of leishmaniasis, characterized by sores that may scar over time. Diagnosis is confirmed through various testing methods, and lesions often heal without treatment.
Step-by-step explanation:
The most common form of leishmaniasis is cutaneous leishmaniasis. This disease is caused by the Leishmania protozoan parasites, which are transmitted by sand fly vectors such as Phlebotomus spp. and Lutzomyia spp. Cutaneous leishmaniasis is characterized by the formation of sores at the site of the insect bite. These sores may start as papules or nodules before becoming large ulcers, often leading to scarring after they heal. Definitive diagnosis of leishmaniasis is made by techniques such as visualizing organisms in Giemsa-stained smears, cultures, or PCR-based assays of tissue aspirates.
The lesions of cutaneous leishmaniasis typically resolve after weeks or months without treatment, although treatments are available for more severe infections. The most common form of leishmaniasis is cutaneous leishmaniasis. It is characterized by the formation of sores at the site of the insect bite, which may start as papules or nodules before becoming large ulcers. Cutaneous leishmaniasis is usually not treated, and the lesions will resolve after weeks or months, but may result in scarring.