Skin anatomy refers to the structure of the skin, which consists of two principal parts: the outer, thinner portion which is called the epidermis and the inner, thicker portion which is known as the dermis. Alternatively, skin physiology is the subdivision of physiology which concerns the functions of the skin including the regulation of body temperature, protection, sensation, excretion, immunity, blood reservoir and the synthesis of Vitamin D. There are more than a thousand conditions that may affect the skin but some of the most common skin diseases include rashes, bacterial infections, fungal infections, parasitic infections, pigmentation disorders, tumours and cancers and skin diseases that result from trauma. This book gathers the latest research from around the globe in this field.