Preface

This textbook contains the latest advances and scientific knowledge from the leading experts in hair biology, hair disorders, and clinical trichology.

During the past 40 years, the interest in hair loss and disorders has significantly increased. In addition, recent advances in molecular biology have evolved our understanding of hair biology. One of the main goals in publishing this book is to increase our knowledge about hair pathology, new treatment options, and modalities.

This book is organized into ten sections. Each section deals with hair biology, hair genetics, hair diagnostics, hair loss types, pathogenesis, treatment options, and restoration techni‐ ques. This book also emphasizes on various genetic and nongenetic alopecia types, differen‐ tial diagnosis, and the measurement of hair loss. One chapter of the book is devoted to natural products for hair care and treatment. Besides, a comprehensive chapter on psycho‐ cutaneous disorders of the hair and scalp is presented within this textbook.

We hope that the current book will provide interesting knowledge and different useful methods for recognizing and improving hair loss problems. We believe that this textbook will serve as a comprehensive guide to many physicians dealing with hair disorders in their clinical practice. It will hopefully be a valuable resource for dermatologists, educators, other physicians, and medical students.

We offer our special thanks to Ms. Romina Skomersic, Publishing Process Manager, for her invaluable help in this book project.

We are thankful to our wives and our children for their understanding regarding missed family time.

> **Assoc. Prof. Dr. Zekayi Kutlubay, MD** Associate Professor of Dermatology Department of Dermatology Istanbul University Cerrahpasa Medical Faculty Turkey

> **Prof. Dr. Server Serdaroglu, MD** Professor of Dermatology Department of Dermatology Istanbul University Cerrahpasa Medical Faculty Turkey

**Section 1**
