A tissue refers to a distinct material comprising of special cells, which work together in coordination to carry out a particular function. There are four types of tissues, namely, connective tissue, epithelial tissue, muscle tissue and nervous tissue. Connective tissue diseases are a set of medical conditions in which the connective tissues of the body are the primary target of pathology. There are several types of connective tissue diseases, such as systemic lupus erythematosus, marfan syndrome, granulomatosis with polyangiitis (GPA), and microscopic polyangiitis. The signs and symptoms of these diseases include weakness, fatigue and fever. Some of the major epithelial tissue diseases and conditions include celiac disease, asthma, human papilloma virus (HPV), vertigo, and certain types of cancer. Medications, vitamin supplements and physical therapy can be used to treat these diseases. This book aims to understand the clinical perspectives of tissue diseases. It presents researches and studies performed by experts across the globe. This book is a vital tool for all researching and studying these diseases.