Dementia :
Dementia is a term used to describe a group of symptoms that affect the parts of the brain involved with thinking, memory, and concentration. Causes of dementia are Alzheimer's disease, frontotemporal dementia, vascular dementia, dementia with Lewy bodies, Parkinson's disease, and mixed dementia. Symptoms of dementia are forgetting recent events, repeating questions for a short period, misplacing the items, placing the items in unusual spots, difficulty coming up with the right words, and changes in mood and interests. Severe symptoms include the ability to remember declines, talking right words becoming difficult, daily routines like brushing teeth, making coffee, cooking, and paying bills becoming challenging, anxiety, frustration, confusion, depression, and hallucinations.