Hi, a year ago I had a bad rash that was in my groin area, down my thigh some, also my anus but not on my scrodom or penis. Also rash in most of my joint areas, back of my knees, underarms, front of my eldows, some on my wrist, and my neck. I spent some time in mexico and the philippines before it appeared. The rash is mostly gone now, except I still have some itching on my upper thigh area. My doctor thinks it is a reaction to some of the oil I work with at my job, but I don't think so. I am thinking a parasite. What do you think.