Dementia is the final common path of various pathogenetic mechanisms that m
ay lead to a number of different clinical forms, with primary degenerative
and vascular dementias accounting for more than 80% of cases. Dementia is a
complex clinical condition that includes cognitive, personality, and behav
ioral changes. Therefore a therapeutic approach to dementia should be based
from the beginning on a comprehensive intervention plan, both pharmacologi
cal and nonpharmacological. This should not be aimed at obtaining a complet
e (impossible) recover but at achieving the best day-to-day management of a
chronic, progressive, disabling disease involving numerous domains and sho
wing impairments with varying rates of progression. Deterioration in functi
onal abilities of daily living has a major impact on the quality of life of
those suffering from dementia, and this is a critical predictor for instit
utionalization. Increasingly necessary for optimizing intervention strategi
es are studies to: (a) measure changes in functional abilities over the cou
rse of dementia (namely Alzheimer's disease), (b) evaluate the relationship
between functional abilities and cognition, and (c) quantify the effect of
various therapeutic approaches on functional decline. Symptomatic drugs af
fecting cognitive abilities and psychoactive drugs for behavioral disturban
ces should be considered. For the cognitive domain positive results have be
en obtained with acetylcholinesterase inhibitors. Among the psychoactive dr
ugs indicated for behavioral disorders, significant improvement in terms of
both efficacy and tolerability can be expected from the use of new antipsy
chotic drugs.