Embryology of the Skin -- Histology of the Skin -- Laboratory Methods -- Morphology of the Cells in the Dermal Infiltrate -- Congenital Diseases -- Noninfectious Vesicular and Bullous Diseases -- Noninfectious Erythematous, Papular, and Squamous Diseases -- Vascular Diseases -- Systemic Diseases With Cutaneous Manifestations -- Inflammatory Diseases of the Epidermal Appendages and of Cartilage -- Inflammatory Diseases Due to Physical Agents and Foreign Substances -- Noninfectious Granulomas -- Inflammatory Diseases of the Subcutaneous Fat -- Eruptions Due to Drugs -- Degenerative Diseases -- Bacterial Diseases -- Treponemal Diseases -- Fungal Diseases -- Diseases Caused by Protozoa -- Diseases Caused by Viruses -- Lipidoses, Histiocytoses -- Metabolic Diseases -- Pigmentary Disorders -- Connective Tissue Diseases -- Tumors and Cysts of the Epidermis -- Tumors of the Epidermal Appendages -- Metastatic Carcinoma and Carcinoid -- Tumors of Fibrous Tissue -- Tumors of Vascular Tissue -- Tumors of Fatty, Muscular, and Osseous Tissue -- Tumors of Neural Tissue -- Benign Melanocytic Tumors and Malignant Melanoma -- Lymphoma and Leukemia.