Dementia, also known as mental and behavioural disorders due to use of sedatives or hypnotics, residual and late-onset psychotic disorder, is related to dementia, lewy body and frontotemporal dementia, and has symptoms including angina pectoris, back pain and headache. An important gene associated with Dementia is PSEN1 (Presenilin 1), and among its related pathways/superpathways are Alzheimer's disease and miRNA effects and Neuroscience. The drugs Levodopa and Ketamine have been mentioned in the context of this disorder. Affiliated tissues include brain and hypothalamus, and related phenotypes are nervous system and homeostasis/metabolism