Progressive deterioration in cognitive function and the ability to perform activities of daily living are the hallmarks of Alzheimer's disease (AD). As the disease progresses and behavioural/neuropsychiatric symptoms become more predominant, carers of AD patients themselves encounter a raft of physical, emotional, social and financial problems. Appropriate therapeutic management of AD patients, particularly their behavioural symptoms, may reduce the burden placed on family and professional caregivers. Preservation of cholinergic neurotransmission by cholinesterase inhibitors is the mainstay of pharmacological therapy for AD.
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