As the number of surviving immune suppressed patients continues its rapid increase, the skin manifestations have become increasingly important. AIDS patients and renal, heart, liver, bone marrow and lung transplant patients are surviving longer and are often experiencing skin side effects of immunity suppression. Diabetes is exploding in the USA and offers its own unique brand of immune suppressed skin diseases. Immunosuppressive drugs are being used more frequently and newer biologics and tyrosine kinase drugs have added to new categories of immune suppressed patients. This book aims to clearly elucidate the signs of immune suppressed skin disease to afford early diagnosis and management of this ever-increasing, diverse group of illnesses.