Dr. Antonella Tosti is a Fredric Brandt Endowed Professor of Dermatology and Cutaneous Surgery at the University of Miami. She is a worldwide recognized expert in hair and nail disorders and contact dermatitis, and has been invited to lecture at major international conferences. Dr. Tosti is a founding member and past president of the European Hair Research Society and European Nail Society. She is a past president and member with the Board of Directors of the Council of Nail Disorders. She is the Secretary & Treasurer of the North American Research Society. She is an editor of four textbooks on diagnosis and treatment of hair disorders and three textbooks on nail disorders.