disordercharacterised by considerable deterioration in cognitive function, for instance in loss of memory. Different types ofdementia include corticial dementias (e.g. Alzheimers disease) and sub-cortical dementias(e.g. Huntingtonsdisease).
a drug which increases activation of the central nervoussystem and the autonomic nervous system;decreasing fatigue, increasing physical activity andalertness, diminish hunger, and result in a temporaryelevation of mood.