Final answer:
The nurses will need to perform a skin scraping test to confirm the diagnosis of a scabies infection.
Step-by-step explanation:
To confirm the diagnosis of a scabies infection, the nurses will need to perform a skin scraping test. This involves taking a small sample of the skin from the affected area and examining it under a microscope to look for the presence of scabies mites or their eggs. The skin scraping test is a commonly used diagnostic tool for scabies as it allows healthcare professionals to visually confirm the presence of the mites and accurately diagnose the infection.