Dermatology expert witnesses practice in a variety of fields, including medical malpractice, product liability, cosmetic procedures, and occupational skin disease. Some of the most common specialties include pediatric dermatology, dermatopathology, Mohs surgery, cosmetic dermatology, and wound care. They can opine on the effects of misdiagnosis, delayed treatment, scarring, burns, rashes, infections, and adverse drug or device reactions.