Neurotransmitter changes taking place in the brain of patients with
dementia disorders, mainly Alzheimer type dementia, are reported. Their
role in the pathogenesis of Alzheimer's disease is discussed; and the
neurochemical changes are considered as a base for formulating treatment
strategies. By studying markers in the cerebrospinal fluid, diagnostic
methods may be achieved that will aid in diagnosing subgroups of
dememtia.