Skin diseases are a group of conditions that affect the skin. There are several types of skin diseases, which include vitiligo, acne, rosacea, skin cancer, Raynaud's phenomenon, psoriasis, alopecia areata, etc. Skin diseases can be caused by bacteria trapped in pores or hair follicles, conditions that affect thyroid, kidneys or immune system, and fungus or parasites living on the skin. They can also be caused by medications, such as the ones used to treat inflammatory bowel disease (IBD), genetics, and contact with environmental triggers such as allergens or another person's skin. The signs and symptoms of skin diseases vary according to the type of condition. A person with skin diseases generally experiences symptoms like abnormal pigmentation, dry skin, rashes, itchiness or pain, and red, white or pus-filled bumps. On the basis of the condition of the skin, treatments like antibiotics, laser skin resurfacing, steroid pills, creams or injections, and surgical procedures can be used. This book is a practical guide for the treatment of skin diseases. It consists of contributions made by international experts. This book will prove to be immensely beneficial to students and researchers engaged in the diagnosis and treatment of skin diseases.