Dentistry is one of several areas of medicine concerned with oral mucosal lesions which are many times indicator for underlying systemic illness to make a suspected diagnosis.This book will enable the readers to have a profound knowledge about the oral manifestations of various systemic diseases.Most of these manifestations are nonspecific but should alert the dentist to the possibility of concurrent systemic disease or latent systemic disease that may develop subsequently.This book will be a guide for all the physicians and dentist for early diagnosis and quick management of patients.