Final answer:
A dermatologist is a medical professional specializing in skin, hair, and nail disorders, offering both medical and surgical treatment options. They must undergo extensive training, pass the USMLE, and obtain certification.
Step-by-step explanation:
A physician who treats injuries, growths, and infections relating to the skin, hair, and nails, either medically or surgically, is known as a dermatologist. Dermatologists earn a medical degree and complete years of residency training, and in the US, they pass the USMLE, become licensed in their state, and are certified by the American Board of Dermatology. They work in medical offices or private-practice settings, diagnosing skin conditions, prescribing medications, and may perform procedures like mole removal. The field also includes cosmetic procedures like Botox, laser treatments, and dermal fillers to address skin aging.