Diagnosis of dementia disease
In response to a suspected or pre-existing cognitive impairment in a person, diagnostics in the context of dementia start by examining the severity and type of the syndrome. This is supplemented by a differentiated diagnosis of the underlying disease.
See for introductions on diagnostics and differential diagnostics of dementia:
Förstl, H., & Lang, C. (2011). Was ist Demenz? In H. Förstl (Ed.), Demenzen in Theorie und Praxis. Springer. https://doi.org/10.1007/978-3-642-19795-6 (see esp. pp. 3–9)
Förstl, H. (2011). Rationelle Diagnostik. In: H. Förstl (Ed.), Demenzen in Theorie und Praxis. Springer. https://doi.org/10.1007/978-3-642-19795-6 (see esp. pp. 265–284)
Stechl, E., Knüvener, C., Lämmler, G., Steinhagen-Thiessen, E., & Brasse, G. (2012). Praxishandbuch Demenz. Erkennen – Verstehen – Behandeln. Mabuse. (See esp. pp. 177–190)
For more detailed background information on the individual diagnostic procedures with a focus on Alzheimer's dementia, see also the articles in Chapters 6 and 7 in:
Jessen, F. (Ed.). (2018). Handbuch Alzheimer-Krankheit. Grundlagen – Diagnostik – Therapie – Versorgung – Prävention. De Gruyter. https://doi.org/10.1515/9783110411003