It begins with a critical examination of the screenings for Alzheimer s type dementia through cognitive testing, particularly screenings where language is used. It then analyzes the various linguistic properties (morphological, syntactic and semantic) of the speech of Alzheimer s patients, which can be troubling for both caregivers and their environment in general. More than a synthesis of critical linguistic reflections, Language and Neurology provokes a fruitful reflection through adjustments suggested by the acquired knowledge of textual semantics.