The special exams involve immediate treatment. The health care professional detects at least one Sarcoptes scabiei var. hominis and tries to remove it with the special medical knife or needle. It is the first parasite to go. In case there is no way to discover the parasite with the naked eye, the health care professional might need a sample of your tissue, obtained with the scrape. After observing with a microscope, a final diagnosis and further recommendations are made.