This book focuses on the symptoms, diagnosis and treatment for various types of laryngeal diseases. Laryngopharyngeal reflux, for example, which contributes to voice disorders and otolaryngological imflammatory disorders, is examined with the long-term goal of developing more effective, better targeted, therapeutics for patients with reflux disease. This book also describes the authors' experiences with both autofluorescence (AFE) and contact endoscopy (CE) in oncological diagnosis. The diagnostic potential is exhaustively described in a wide range of laryngeal pathologies, mainly dysplasias and squamous cell cancers. Furthermore, the treatment alternatives for squamous cell carcinoma of the glottic and supraglottic larynx are discussed and the outcomes after radiotherapy and/or surgery are presented. Additionally, this book reviews the complications of endoscopic laser surgery of the larynx to provide strategies to avoid possible dangers. Other chapters in this book discuss electroglottography (EGG), a method for providing non-invasive measurements of glottal activity, the possible laryngeal involvement in rheumatoid arthritis (RA), and an examination of the comorbidity of alcohol and tobacco abuse in patients with surgically treated laryngeal cancer.