Why might a person with dementia have difficulty sleeping?

A person with dementia may have difficulty sleeping due to disruptions in their circadian rhythms, which can affect their sleep-wake cycle. Cognitive decline may lead to increased confusion and anxiety, making it harder for them to relax and fall asleep. Additionally, they may experience changes in their physical health or medication side effects that contribute to sleep disturbances. Environmental factors, such as noise or discomfort, can also exacerbate sleep issues in individuals with dementia.