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Neuropsychiatric symptoms (NS), such as depression, apathy, hallucinations, etc., as well as changes in creativity in older age, are telltale marks in the development of such neurodegenerative diseases as Alzheimer's disease, frontotemporal lobar degeneration, Lewy body disease, and Parkinson's disease. Both NS and creativity are important non-cognitive aspects of behavior that changes as a result of neurodegeneration, similar to the development of cognitive deficit. NS can occur in the preclinical stages of neurodegeneration, as well as in the clinical stages (mild cognitive impairment or dementia). However, in clinical routine, their presence is underestimated, or patients with neurodegeneration are often considered to have psychiatric disorders, which may negatively affect their treatment. Scientific research is increasingly devoted to the analysis of the non-cognitive aspects of neurodegenerative diseases, resulting in the newly defined concept of Mild Behavioral Impairment (MBI). In this paper, a review of the most common NS and changes in creativity as a result of neurodegeneration with a special focus on Alzheimer's disease, frontotemporal lobar degeneration, Lewy body disease, and Parkinson's disease is presented. [ABSTRACT FROM AUTHOR]