The technological advances which achieved during the last decades concluded to the development of a great variety of sensors applicable in the prevention, early diagnosis and management of chronic diseases. The majority of these sensors is used for remote monitoring, limiting hospitalization, aiming thus in hospitals decongestion as well as in more efficient clinical care. This paper attempts to comprehensively review the current state of the art on sensors contributing to the management of the most common chronic diseases (eg. Diabetes, Hypertension, Heart Failure, Pulmonary Diseases, Alzheimer, Parkinsonís etc) in the environment of Ambient Assisted Living (AAL). The objective of this survey is to serve as a reference in order to provide guidelines for future research in sensors targeting chronic diseases management.