Mixed dementia arises when Alzheimer’s (AD) encroaches on another dementia, the two dementias occurring concurrently. With Lizzy, the underlying dementia is known as Sundowner’s. Research has revealed that in almost half of all seniors with dementia, signs of both AD and Multi-infarct (Vascular) Dementia emerge. This latter dementia, caused by vascular issues, is the type with which AD co-exists the most, with Sundowner’s coming next after that. Up to 20% of people with Alzheimer’s experience increased agitation, confusion, and anxiety from late in the day, a condition referred to as Sundowner’s Syndrome. Read about Lizzy’s case and how her family and caregiver look after her.