A dermatologist is a medical doctor who specializes in the diagnosis and treatment of skin diseases. During a consultation, a dermatologist will perform an exam to determine the cause of your skin problem and recommend the best course of action. Some common consultations held by dermatologists include acne consultations, psoriasis consultations, and skin cancer consultations. A dermatologist is a doctor who specializes in the diagnosis and treatment of skin diseases. During a consultation, they will review your symptoms and medical history to determine the best course of action. They may also perform a skin examination to determine the extent of the problem. Depending on the condition, a dermatologist may prescribe medications, surgery, or treatments using light therapy, lasers, or cryotherapy.