Using a microscope. A dermatopathologist has training to look at the skin under a microscope in order to render a diagnosis. A skin biospy is prepared in a lab and put on a slide for the dermatopathologist to review under the microscope.
Derm vs dermpath. A dermatopathologist is a medical doctor who specializes in dermatology and pathology and has the ability to diagnoses diseases of the skin, hair, and nails by looking at samples under a microscope. A dermatologist is a medical doctor who specializes in treating the skin, hair, nails, and mucous membranes.