A Dermatologist is a medical doctor who treats skin disorders internally, as well as externally. A dermatologist diagnosis and treats skin diseases, as well as the scalp. Everything is done from a medical standpoint.

A Trichologist; however, treats from a holistic perspective, which means treating the whole person, taking into account the mental, physical and social factors, rather than just physical symptoms of the disorder. Keep in mind, a Trichologist can work in conjunction with a Dermatologist, or a medical doctor.