This textbook of trichology is a valuable resource for all students, from undergraduate to postgraduate, as well as clinicians. It is comprehensive in its coverage of hair physiology and diseases, with illustrations and pictures to make reading it an enjoyable experience. This textbook fulfils the requirements of medical students with basic science issues. At the same time, clinicians will find it an ideal companion as its content is concise and easy to refer to, while postgraduate students will benefit from its up-to-date data and facts from hair and scalp research. The clinical chapters cover all common and rare diseases in all age groups. The book incorporates various therapeutic modalities, including integrative medicine, cell therapy psychotherapy, and conventional medicine. The chapters are written in a simplified, crisp, practical, and user-friendly style, with many illustrations and classical photographs exhibiting features of selected diseases. Interest in trichology is developing rapidly, with many doctors and aestheticians establishing exclusive trichology clinics. The volume of patients concerned with hair condition and appearance is ever-increasing. The interest and enthusiasm in this subject continue to grow substantially. Therefore, all dermatology and aesthetic medicine stakeholders must furnish and update themselves in the field of hair and hair diseases. Renowned authors with expertise in trichology have shared their knowledge and experience to make this book a success.