... to Brazzelli et al. (1994), there is no unequivocal instrumental test to establish the presence of the disease. Therefore, it is also common practice to establish the neuropsychological symptoms of AD. Numerous studies have been conducted into the neuropsychiatric symptoms of AD so that diagnosis can be as accurate as possible. According to Venneri, Turnbull and Sala (1996) the low contribution of neurological and neuroradiological examination to the diagnosis of AD in its early stages raises severe diagnostic problems. This is because up to 30 per cent of dementias may be curable (e.g. depressive psuedodementia, normotensive hydrocephalus) and the possible diagnosis of AD needs to be excluded for these to be treated. According to the ICD-10 other causes of dementia (such as CVD, Parkinsons, Corea, and Hydrocephalus) must be excluded before making a diagnosis of AD. The ICD-10 diagnostic criterion for AD is verbal and non-verbal memory decline, decline of ...

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