Dementia is an umbrella term that describes a large group of symptoms that are caused by diseases that affect the brain. It is caused by loss of nerve cells in the brain. This is a progressive medical condition and naturally gets worse. This happens when brain cells starts dying which isn’t replaced, and as more and more cells die, you lose your brain structure and function, and your ability to think clearly is lost. People can be affected by dementia in many different ways, depending on the area of the brain affected. Some type of dementias that are caused by reactions to medications or vitamin deficiencies, might improve with treatment. It’s a terrible illness where you could see the affected person go from being very active to being bedridden. Generally with dementia, a person's consciousness is not affected. Therefore, the diagnosis requires a change from a person's usual mental functioning and a greater decline than one would expect due to ageing. Alz