Board-certified dermatologists are trained to treat all skin conditions, however, there are further specialized fields of dermatology that require additional training beyond the four year dermatology residency. For example, MOHS surgeons receive further training in the removal, pathology, and reconstruction of skin cancers. Pediatric dermatologists receive further training in childhood skin conditions. And dermatopathologists are experts in the pathology of the skin and are the physicians that help us interpret skin biopsies under the microscope.