Dementia is a syndrome of global and progressive impairment of acquired cognitive abilities with preserved consciousness resulting from organic disease of the central nervous system. Dementia is progressive, incurable, and in the final stages leads to complete dependence on others. It is estimated that dementia affects 10% of people over the age of 65, according to estimates by the European Alzheimer's Association. Dementia is a public health priority of the 21st century. The facts about the number of patients and the cost of treating people with dementia are significant. The thesis will present all types of dementia and their characteristics and specifics. Through the paper, I will point out the importance of a multidisciplinary approach to people with dementia as a key thing for the best possible care and treatment of conditions that dementia causes according to the stages of the disease. The rights of a person suffering from dementia will be described, as well as the problems that occur in families with the disease. The aim of this master thesis is to present approaches and standards in the treatment and care of people with dementia from the perspective of a nurse in order to optimal progress and improvement in the care and treatment of people with dementia.