Despite the advances in medicine, many conditions associated with the ageing population are emerging to challenge successful healthcare delivery. The most prominent of which are dementia and delirium. The convergence between the increasing aged population and neurocognitive failure render it a public health crisis. In contract to dementia, delirium is an acute onset brain failure that is characterised by a complex phenomenology. Delirium is the ultimate paradox of medicine. At once universal to the human experience and unique to the individual life. It appears at different times, in different...