In many near eastern traditions, including Christianity, Judaism and Islam, demons have appeared as a cause of illness from ancient times until at least the early modern period. This volume explores the relationship between demons, illness and treatment comparatively. Its twenty chapters range from Mesopotamia and ancient Egypt to early modern Europe, and include studies of Judaism, Christianity and Islam. They discuss the relationship between 'demonic' illnesses and wider ideas about illness, medicine, magic, and the supernatural. A further theme of the volume is the value of treating a wide variety of periods and places, using a comparative approach, and this is highlighted particularly in the volume's Introduction and Afterword. The chapters originated in an international conference held in 2013. "Ultimately, Demons and Illness admirably performs the important task of reminding modern scholars of premodern health of the integral role played by these complex and shifting entities in the lives of people across the globe and through the centuries." -Rachel Podd, Fordham University, in: Social History of Medicine 32.3 (2019) "Given the sheer breadth of its scope, the volume is, of course, illustrative rather than comprehensive in its coverage, yet there is a definite coherence to its content, aided by the introduction and afterword which bookend the work and help begin to draw out the threads of commonality and difference. As such it constitutes a significant and welcome resource for comparative explorations of historical-cultural links between demons, illness, medicine, and magic, while offering a clear invitation to future work." -Matthew A. Collins, Journal for the Study of the Old Testament 43.5 (2019)