Psychiatric Issues in Parkinson’s Disease. A Practical Guide Edited by Matthew Menza and Laura Marsh London and New York: Taylor & Francis, 2005. 340 pp, ISBN 1–84184–491–8. £55.00 Dementia with Lewy Bodies and Parkinson’s Disease DementiaEdited by John O’Brien, Ian McKeith, David Ames and Edmond Chiu London and New York: Taylor & Francis, 2005. 264 pp, ISBN 1–84184–395–4. £75.00