Anxiety symptoms in dementia can be seen as an expression of stress in predisposed patients who become aware of their cognitive decline. In later stages of the disease, when awareness is lost, the presence of anxiety symptoms cannot be explained as a reaction to this type of stress. The presence of anxiety symptoms in the more impaired patients becomes similar and probably as complex in its etiology and clinical manifestations as other behavioral and psychological symptoms of dementia (BPSD). In this review, we will discuss anxiety symptoms in BPSD.