1 Introduction -- 2 Anatomy -- 3 Medical History and Clinical Examination -- 4 Normal Variations -- 5 Clinical scores -- 6 Histopathology of Oral Hyperplastic and Neoplastic Lesions -- 7 Genodermatoses with Oral Manifestations -- 8 Inherited Epidermolysis Bullosa -- 9 Dyskeratosis Congenita -- 10 Pachyonychia Congenita -- 11 Oral Lichen Planus -- 12 Recurrent Ahthous Stomatitis -- 13 Behcet disease -- 14 Chronic Ulcerative Stomatitis -- 15 Lichen sclerosus of the oral mucosa -- 16 Cheilitis granulomatosa and Melkersson Rosenthal syndrome -- 17 Autoimmune Blistering Diseases: An Introduction -- 18 Pemphigus Vulgaris -- 19 Paraneoplastic Pemphigus -- 20 Mucous Membrane Pemphigoid -- 21 Bullous pemphigoid -- 22 Anti-p200 Pemphigoid -- 23 Linear IgA disease -- 24 Epidermolysis Bullos Acquisita -- 25 Lupus erythematosus -- 26 Systemic Sclerosis -- 27 ANCA-associated Vasculitis -- 28 Viral Infections -- 29 Bacterial Infections of the Oral Mucosa -- 30 Fungal infections -- 31 Benign Tumors and Hyperpigmentation -- 32 Leukoplakia and Squamous Cell Carcinoma -- 33 Oral submucous fibrosis -- 34 Melanoma of the Oral Cavity -- 35 Lymphoma, Hematological Neoplasia, and Metastases -- 36 Oral Mucositis Following Cancer Therapy -- 37 Erythema Multiforme -- 38 Epithelial Necrolysis -- 39 Contact Stomatitis -- 40 Oral Allergy Syndrome -- 41 Gingivitis and Peridontitis -- 42 Gingival overgrowth -- 43 Diseases of the tongue -- 44 Diseases of the Oral Mucosa in Infants, Children and Adolescence -- 45 Diseases of the Oral Mucosa in East Africa -- 46 Nutrition-related Disorders -- 47 Xerostomia -- 48 Miscellaneous Disorders with Oral Manifestations.