Dr P.C. Das is a senior practicing clinical dermatologist at Purnea and Katihar districts of Bihar, India. He has graduated and post graduated from Patna Medical College, Patna University, India, in 2000. He has been practicing Clinical dermatology, Lasers and Dermatosurgery for over two decades. He has participated and presented papers in international, national and regional dermatology conferences and organized some of them. His fields of special interest are newer drugs in leprosy and clinical dermatology.

Dr Piyush Kumar finished his post-graduation in Dermatology from Medical College and Hospital, Kolkata in 2011 and was judged the best outgoing university medical graduate in Dermatology. He received many scholarships during and after his post-graduation to attend and present papers at National and International conferences. He has published more than 150 papers in indexed National and International journals and works as a reviewer for various National and International specialty journals. He has contributed many chapters in various books and has co-edited "Nail Disorders: A Comprehensive Approach", "Clinical Cases in Disorders of Melanocytes" and "Clinical Cases in Leprosy". His areas of interest are Clinical dermatology, Dermatopathology, Nail disorders and Genital dermatoses.

Foreword by Debabrata Bandyopadhyay. Foreword by Eckart Haneke. Preface. Acknowledgements. Editors. Assistant editors. Contributors. INTRODUCTION TO CLINICAL DERMATOLOGY. Overview of skin lesions. APPROACH TO CLINICAL DIAGNOSIS. Hypopigmented and depigmented macules and patches: Localized. Hypopigmented and depigmented macules and patches: Generalized. Hyperpigmented macules and patches: Localized. Acquired facial melanosis. Hyperpigmented macules and patches: Generalized. Diffuse hyperpigmentation. Reticulate and mottled pigmentation. Papules: Localized. Facial papules. Papules: Generalized. Follicular papules. Plaques: Localized. Plaques: Generalized. Nodules: Localized. Nodules: Generalized. Tumors. Vesicobullous lesions: Localized. Vesicobullous lesions: Generalized. Pustules: Localized. Pustules: Generalized. Clinical approach to ulcers. Ulcer: Single or few. Leg ulcers. Ulcers: Multiple. Scales: Localized. Scales: Generalized. Atrophy. Purpura. Erythema: Localized. Erythema: Generalized. Telangiectasia. Cysts and pseudocysts. Draining sinuses and fistulas. Eschar. Cutaneous horn. REGIONAL DERMATOLOGY. Scalp. Periorbital area. Ears. Nose. Oral mucosa. Tongue. Axillae and groins. Umbilicus and periumbilical region. Palms and soles. Male genitalia. Female genitalia. Nipple areola complex. Scrotum. Seborrheic area. Intertriginous areas. Nails. SKIN IN SYSTEMIC DISEASES. Nutritional deficiency disorders. Endocrine disorders. Renal disorders. Autoimmune rheumatic diseases. Hereditary disorders of connective tissue. Hepatic diseases. Cardiovascular diseases. Neurocutaneous conditions. Psychocutaneous disorders. Dermatoses in HIV-infected persons. Internal malignancy. Nails in systemic disease. MISCELLANEOUS. Head and neck mass. Red face. Leonine facies. Linear lesions. Annular lesions. Alopecia. Hypertrichosis and hirsutism. Vascular lesions. Vasculitis. Neonatal dermatology. Geriatric dermatoses. Dermatoses of pregnancy. Cutaneous adverse drug reactions. Dermatitis artefacta, dermatitis neglecta, and terra firma-forme dermatosis. Pruritus SineMateria. Hyperhidrosis. Anhidrosis. Photosensitivity in children. Photosensitivity in adults. Maculopapular rash. Fever with rash in children. Index.