I had a skin disease and was treated by doctors. the sores continued. I even had a colonoscopy ordered by one doctor. this continued for two years. finally, a doctor took sample and viewed it under a microscope, which, THANK GOD!, as a fungus. She advised me to put shortening all over my arms and legs each night for two weeks. Also she prescribed premawarin. the sores cle.araed up in about two weeks. but, I have scars. How can so many doctors not know what it was at the start.