I developed Cutaneous Leishmaniasis while living Buckeye, Arizona, in 2016. It is 30 miles west of Phoenix and is next to Luke Air Force Base. It occurred after I was bitten by sandflies while living in Buckeye, Arizona. An I.D. doctor in Scottsdale diagnosed me. He was a specialist in Vector Bourne Chronic Diseases.
Classic Leishmaniasis sores developed on my upper back, neck and frequently reoccured just above both of my temples on the scalp. The sores were very painful and oozed goo and debris.
The only treatment that completely got rid of them was a treatment I read about in a Brazilian medical article - applying oregano essential oil, neat, multiple times a day (3-8 applications) until the lesions dried up. If I caught the lesion early I could even prevent it from erupting. If I forgot to apply the oil for 1/2 - 1 day the lesion would start to become worse. Eventually, no more lesions appeared on my skin. I have been lesion free for 3 years.
I was not sure which species of oregano oil to apply so I applied two species: oreganum vulgare and oreganum heracleoticum from Greece. Both oils were very potent and stung. Though, the pain quickly subsided.
Later, I also took oregano oil internally, with other anti-leishmanisis essential oils for months. I am not sure if taking the oils internally did anything for getting rid of the lesions.
I had to take a very potent probiotic at bedtime because oregano oil can wipe out the flora in your intestines.... think "stinky" bottom.
My doctor was impressed that I resolved the infection on my own. I think prayer led me to helpful information.