Many older adults tend to have trouble sleeping, but for people who suffer from Alzheimer’s or other forms of dementia, they have an even harder time. Alzheimer’s may reverse a person’s sleep-wake cycle, causing daytime drowsiness and nighttime restlessness. As Alzheimer’s continues to progress, these sleep disturbances often increase. With more severe forms of dementia, people tend to be sleepier during the day, which can cause their sleep at night to become fragmented and disrupted. It is common for people suffering from both dementia and Alzheimer’s to constantly wake at night and fall asleep during the day.