Provide nightlights or soft lighting to cut down on confusion and to aid in finding bathroom. Make sure there's a clear, well-lit pathway to the bathroom. Practice the route during the day. Avoid laying clothes out for the next day or talking about the next day's activities. Check person's temperature on awakening.
Internal thermostats can change with dementia.
Allow individuals to sleep on couch or in armchair, if they refuse to get into bed. Make the house, or an area of the house, safe for the person to wander in alone at night. Consider allowing the person to be up at night, if this can be accomplished safely and without destroying caregiver's routine. Use sleeping medications only as a last resort and discuss the subject with the doctor beforehand. Though sleep aids might be helpful in establishing a more regular sleep cycle, they can add to confusion on waking.